The Connection Between New AC Installation and Better Indoor Air Quality
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<title>The Connection Between New AC Installation and Better Indoor Air Quality | Day & Night Air Conditioning, Heating, & Plumbing</title>
<meta name="description" content="See how new SEER2-compliant AC installation in Phoenix improves indoor air quality. Learn about filtration, humidity control, duct design, and IAQ upgrades. Serving Arcadia, Biltmore, Desert Ridge, Ahwatukee, and across Maricopa County." />
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<h1>The Connection Between New AC Installation and Better Indoor Air Quality</h1>
Day & Night Air Conditioning, Heating, & Plumbing installs high-efficiency air conditioning systems across Phoenix, AZ and Maricopa County. The team designs each system with both comfort and indoor air quality in mind. The work blends Manual J load calculations, duct engineering, and IAQ accessories to match the Valley of the Sun climate. The result is cleaner air, steadier temperatures, and reliable cooling during 115°F heat waves.
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<h2>Why indoor air quality rises or falls with the AC system</h2>
Indoor air quality is not an add-on. It is a direct output of the air conditioning system’s design, components, and install quality. The air handler pulls air across the filter and evaporator coil, sets airflow with the blower, and pushes it through ducts. Any mismatch in this chain adds dust, pollen, and irritants to living spaces.
Older or oversized systems short-cycle in Phoenix homes. They start and stop often. They cool the air but leave humidity control and filtration underperforming. Blowers run at one speed, which can cause poor mixing and dead zones. A new installation with variable speed, tight ducts, and proper filtration solves that pattern. It catches airborne particles, manages moisture, and holds a steady airflow profile across rooms in Arcadia, Biltmore, Paradise Valley Village, and Desert Ridge.
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<h2>What a modern Phoenix AC installation changes inside the home</h2>
A correct install affects four drivers of indoor air quality: filtration, ventilation strategy, humidity control, and pressurization. A well-sized system uses a smart or programmable thermostat to manage blower cycles. It runs longer, quieter, and steadier. That pattern increases filter contact time and improves particle capture. It also helps coils reach a stable temperature, which supports dehumidification even in a dry climate with summer monsoon spikes.
During a replacement, the team can upgrade to high-MERV media filters, add UV-C to limit coil biofilm, and clean or replace drain pans and line sets. With fresh copper line sets and a sealed air handler, the system stops pulling attic dust through gaps. Duct repairs or redesign help balance supply and return air. That shift reduces hot and cold spots in Ahwatukee, Moon Valley, North Mountain, and the 85032 and 85050 zip codes.
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<h2>Filtration: from disposable pads to high-efficiency media</h2>
Many Phoenix homes still use thin one-inch filters. These clog fast during haboob season and wildfire haze days. They also bend and leak around the frame. A new central air installation can take a four- to five-inch media filter with a higher MERV rating that fits the blower’s pressure profile. The right pick captures fine dust from desert landscaping near Camelback Mountain, pet dander in urban condos near Chase Field, and pollen that rides in from the Salt River corridor by the Desert Botanical Garden.
Filter selection is not a guess. Day & Night measures static pressure at the return and supply, checks coil pressure drop, and sizes the filter cabinet so the variable speed blower does not choke. A MERV 11 to 13 media filter often hits the sweet spot for Phoenix. It upgrades filtration without starving airflow. For allergy-sensitive clients, a HEPA bypass cabinet or an electronic air cleaner may be the better route if ducts and blower capacity allow it.
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<h2>Humidity control and the Phoenix monsoon</h2>
Phoenix air is dry for most of the year, yet summer storms raise humidity quickly. Old single-speed units cool fast and shut off before pulling moisture across the coil long enough. That leaves rooms feeling clammy even while the thermostat reads low. New variable speed systems hold longer, lower-speed cycles. Air moves gently across the evaporator coil and allows more latent removal during monsoon nights in 85018, 85016, and 85044. In shoulder seasons, a heat pump with smart controls can also sidestep overcooling by modulating capacity.
Correct airflow is key. The design target usually falls near 350 to 400 CFM per ton in Phoenix for a balanced sensible heat ratio. Lower airflow boosts dehumidification but can risk coil freeze if pushed too far. Higher airflow cools dry air faster but can pass dust through. Day & Night tunes blower tables and checks superheat and subcool to confirm the refrigerant circuit is on target for both comfort and indoor air quality.
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<h2>Ductwork: the hidden driver of particle control and room balance</h2>
Leaky ducts in a 120°F attic pull in fiberglass fibers, dust, and insulation fines. Those leaks also depressurize homes and draw dry, hot air through exterior gaps. A replacement AC project is the best time to seal and correct ducts. The team inspects trunk lines, branch sizing, plenum transitions, and returns. They test for leakage and pinch points. They also correct flex runs that snake over roof trusses in older builds near Phoenix Sky Harbor International Airport.
Room balance depends on correct supply CFM and return paths. Bypass returns or undercut doors can cause cross-contamination between rooms. Fresh return drops and lined return boxes help reduce noise and particle blow-by. With a precise Manual D approach, the new system can deliver even airflow to a long ranch home in Arcadia or a two-story layout in Desert Ridge without cold pockets or dusty corners.
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<h2>Equipment features that raise IAQ in the Valley of the Sun</h2>
Modern equipment design raises both comfort and air quality when matched to Phoenix weather patterns. Variable speed blowers keep filters working longer each hour. Two-stage or inverter compressors keep coil temperature stable. That stability reduces coil sweat spikes and biofilm growth. With a clean condensate drain and a sloped drain pan, standing water does not linger to feed microbes.
Heat pumps and split-system central air conditioners using R-410A or newer low-GWP refrigerants can deliver tighter charge windows and steadier operation. When paired with a smart thermostat, blower profiles can continue on low after the compressor shuts down. That extended fan setting polishes and mixes air, which helps filtration in homes off North Tatum Boulevard in 85050 or near Lookout Mountain in 85022.
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<h2>SEER2 and EER2 in Phoenix: what efficiency really means for air quality</h2>
Higher SEER2 reduces energy use across a cooling season. In Maricopa County, that can drop monthly APS or SRP bills, especially in peak July loads. Indoor air quality ties in because efficient systems often use advanced compressors and blowers that modulate. That modulation delivers longer, smoother cycles. The air spends more time across the filter and coil. Particles and allergens have more passes to get trapped. Noise drops, which helps stress and sleep quality.
EER2 speaks to peak-hour performance in heat. This metric matters in Phoenix. A system that holds EER2 during 3 p.m. Spikes can cool without harsh starts. Lower cycling reduces dust billows in ducts and returns. The homeowner gets steadier comfort in neighborhoods from Ahwatukee to Moon Valley while the filter does real work rather than catching air bursts between short cycles.
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<h2>Commercial and multifamily spaces: rooftop units and IAQ</h2>
Many Phoenix commercial buildings and multifamily sites run packaged rooftop units. Rooftop units see extreme deck temperatures and dust loads near freeways and construction zones. During an HVAC replacement, Day & Night evaluates condenser coil condition, curb adapters, economizer function, and filtration racks. RTUs can integrate high-MERV filters and demand-control ventilation with CO2 sensors. They also benefit from variable frequency drives on supply fans to hold static pressure targets across changing tenant loads.
In office suites near Camelback Road or shops near Chase Field, better ventilation control reduces odors and VOCs while keeping energy use in check. Clean RTU drain pans and UV-C near the evaporator coil reduce microbial growth in high-traffic spaces. When landlords phase in new rooftop units, tenants often report fewer afternoon headaches and less dust on desks. That feedback ties back to correct airflow, balanced outdoor air, and tight cabinet seals.
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<h2>Parts and components that matter on day one</h2>
New AC installations replace more than the box outside. The installation integrates the compressor, condenser coil, evaporator coil, air handler, and thermostat. It also includes copper line sets, drain pans, and the pad or mounting system. Day & Night swaps aging line sets when access allows, pressure-tests with nitrogen, and pulls a deep vacuum to industry targets. That process removes moisture and air that would corrode from the inside. A clean refrigerant circuit protects the compressor and keeps the coil clean, which supports indoor air quality by blocking oil film that can catch dust.
Smart thermostats add tighter control. Programmable schedules prevent swings that push duct leaks and dust. Variable speed blowers reduce filter chatter and bypass. The team confirms airflow with static readings and sets the blower to match design CFM. That is how air delivery lands in spec for a 1,700-square-foot Biltmore bungalow or a 3,400-square-foot Desert Ridge two-story with an upstairs bonus room.
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<h2>Why oversized units hurt indoor air quality in Phoenix</h2>
Oversizing is common. A larger tonnage unit may seem safe in 115°F heat, yet it runs short cycles. The system drops supply temperature fast but does not move enough total air volume through the filter each hour. Dust and pollen remain suspended. Humidity control suffers during monsoon surges. The compressor and blower start more often, which stirs up settled dust in returns and branch runs.
Manual J load calculations stop guesswork. Day & Night records window area, attic insulation, orientation, infiltration, and duct location. The result is a right-sized unit with a sensible heat ratio aimed at desert homes. The team avoids upsizing unless there is a verified need, like a new sunroom in Paradise Valley Village or large west-facing glazing in 85018.
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<h2>R-22 obsolescence and why replacements clean the air</h2>
Systems older than 2010 often used R-22. Repairs are costly due to limited refrigerant supply. Old coils with leaked R-22 tend to carry oil film and debris. Replacement with an R-410A or low-GWP refrigerant system brings new coils, new line sets when needed, and fresh drain pans. That reset strips years of biofilm, fine dust, and sludge. New cabinets seal better, so return leaks drop, which blocks attic dust from 85085 and North Phoenix ridge-line tracts from riding into living rooms.
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<h2>Ductless mini-splits and zoned cooling: targeted IAQ gains</h2>
Ductless mini-split systems by Mitsubishi Electric and Daikin isolate rooms and reduce duct losses. Each indoor head has its own filter and blower. Home offices in Arcadia or guest suites in Ahwatukee can run independent temperature and fan profiles. With no attic ducts, the system avoids dust draw from leaky returns. For larger homes, zoned cooling with motorized dampers and a variable speed air handler can give similar control through ducts. That design helps multi-level homes in 85021 and 85032 balance airflow and maintain cleaner bedrooms at night.
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<h2>Installation practice in Phoenix that moves the IAQ needle</h2>
Real air quality gains come from details in the field. Day & Night’s NATE-certified installers follow a consistent setup. They level the pad or roof curb, align refrigerant lines to reduce oil traps, and braze with nitrogen flow. They replace old drain pans and slope them to the trap. They use insulating mastic and gaskets on cabinet seams. They test static pressure and confirm design CFM at each return. They sanitize the coil area and return box before final close-up so dust from demo does not seed the new system.
These steps are not cosmetic in the Valley’s dust. Phoenix wind events push fine sand into attics and rooftops. Proper sealing, clean coils, and a tuned blower preserve gains. With ROC #133378, licensed, bonded, and insured, the team documents readings and photographs of key steps. Homeowners get a snapshot of the system on day one.
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<h2>Brands and system types that pair well with desert conditions</h2>
Day & Night installs major brands that hold up under Maricopa County heat. Trane, Carrier, Lennox, Goodman, Rheem, and York cover most needs. For higher-end control or niche zoning, American Standard, Daikin, and Mitsubishi Electric bring inverter tech and advanced filtration options. The choice depends on home layout, attic access, and budget. A Lennox variable speed air handler with a Trane or Carrier high-SEER2 condenser is common for Central Phoenix. In condos near downtown and Chase Field, packaged units or hybrid systems may fit roof constraints.
The team matches appliances to the job: central air conditioners for most single-family homes, heat pumps for efficient shoulder-season comfort, packaged rooftop units on flat-roof properties, and ductless mini-splits for additions or garages in North Mountain and Moon Valley.
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<h2>What homeowners notice after an AC replacement in Phoenix</h2>
Clients report less dust on shelves within a week. Allergy flare-ups ease, especially during bloom cycles and dust storms. Cooking odors clear faster. Bedrooms feel even. Doors stop slamming due to pressure imbalances. Thermostats show more gradual temperature curves rather than steep saw-tooth swings. Energy bills fall in the first full month of 110°F days. Those signals track with a tuned system that moves the right air volume through a higher-grade filter and tight ducts.
In Arcadia ranch homes with original duct layouts, new returns and sealed trunks often remove a long-standing musty scent. In Desert Ridge two-stories, variable speed blowers end the upstairs hot zone at dusk. In Ahwatukee foothill homes, dust from trail air near South Mountain Park drops once the return leaks are sealed and media filters take over.
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<h2>Comparing repair vs. Replacement through an IAQ lens</h2>
Repairs can keep an older unit running, but they do little for indoor air quality if the coil is fouled, the ducts leak, or the blower is single-speed. A compressor change does not fix a starved return. A new thermostat does not fix short cycling from oversizing. When a system passes 10 to 15 years, especially with R-22 or repeated refrigerant issues, replacement opens the door to a full IAQ reset. That means a new evaporator coil, tight air handler cabinet, fresh drain system, new media filter rack, and a blower that can run quietly on low to keep filters active.
Costs vary by tonnage, brand, and duct work. Many Phoenix installations fall into ranges shaped by access and roof type. Utility rebates may apply at times for SEER2 upgrades. Financing options can spread costs across seasons. A 10-year parts warranty common on major brands supports long-term planning. The net result is a home that cools efficiently and breathes cleaner, with fewer headaches and less dusting.
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<h2>Typical questions from Phoenix homeowners about IAQ and new AC</h2>
How fast does dust drop after a replacement? Often within days, with larger gains after filter maintenance in month one. Will a higher MERV choke airflow? Not if the filter cabinet is sized right and the blower is set to the correct CFM target. Do I need UV-C? In dusty attics and during monsoon humidity spikes, UV-C near the coil can limit bio-growth. Is duct cleaning required? If ducts are sealed and the new media filter is in place, duct cleaning may be needed only once as a reset. Long term, good filtration should keep ducts clean.
Can a mini-split help my home office? Yes. A ductless system gives zone control and local filtration. It also avoids pulling dust through leaky ducts. What about rooftop units on my townhouse? Packaged units can reach high filtration and tight cabinet seals. They need proper curb sealing, drain care, and fan tuning to keep air clean and quiet indoors.
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<h2>Local context: where installation details shift across Phoenix</h2>
Arcadia and Biltmore properties vary in age and duct design. Many have long low-slung ducts near flat roofs. Static pressure checks and return upgrades pay off here. Desert Ridge and 85050 homes often run larger systems with upstairs bonus rooms. Zoning or variable speed control helps with evening heat load. Ahwatukee and 85044 face strong sun on south and west exposures from South Mountain Park slopes. Window gains push sizing margins. Correct load calcs avoid oversizing and short cycling that hurts IAQ. Moon Valley and North Mountain have older roofs and attic layouts with tight access. This can push choices toward rooftop units or staged retrofits with careful line set routing.
Downtown condos near Chase Field see rooftop packaged units and limited curb access. These projects demand lift planning and office coordination. Filter upgrades and coil access strategy prevent service dust from entering occupied floors. Near Phoenix Sky Harbor International Airport, aircraft soot and fine particulates add IAQ pressure. A high-MERV media cabinet with tight gasketing is key. In 85016 and 85018, tree pollen and older framing create unique leakage paths. Balanced returns and door relief cuts prevent room-to-room transfer of allergens.
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<h2>What “ac installation service Phoenix” should include to improve IAQ</h2>
It should start with Manual J load calculations, a duct inspection, and a plan for filtration and blower programming. It should handle SEER2 compliance, thermostat setup, and static pressure testing. It should include sealed cabinets, new drain pans, correct traps, and line set replacements when needed. It should finish with airflow balancing and homeowner orientation on filter changes. Anything less leaves IAQ gains to chance.
Day & Night delivers AC installation service near you across Phoenix zip codes including 85001, 85016, 85018, 85021, 85032, 85044, 85050, and 85085. The team tunes homes and small businesses from Scottsdale to Glendale, Tempe to Mesa, and Chandler to Gilbert. They stand behind the work with a 10-year warranty on major components from leading brands and offer financing options on approved credit.
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<h2>Small changes after installation that keep air clean</h2>
Once the new system runs, keep filters fresh on schedule. Set the thermostat fan to “auto” with periodic circulating fan programs if offered. Seal attic penetrations that leak dust into returns. Check the condensate line each spring. Keep landscaping gravel and dust away from the condenser coil pad. Wash the outdoor coil gently from inside out with water during spring service. These steps maintain airflow and keep IAQ gains intact through long Phoenix summers.
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<h2>A quick homeowner IAQ checklist for Phoenix</h2>
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<li>Use a high-MERV media filter that matches your blower’s static pressure</li>
<li>Schedule spring service to clean coils and verify drain slope</li>
<li>Seal return leaks and add a dedicated return if rooms feel stuffy</li>
<li>Program longer, lower-speed fan cycles during monsoon humidity</li>
<li>Upgrade old R-22 systems to SEER2-compliant units with variable speed</li>
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<h2>When to move from repair to full HVAC replacement</h2>
Consider replacement if the unit is 10 to 15 years old, uses R-22, or needs frequent repairs. Watch for hot and cold spots, higher APS or SRP bills, and rising noise. These signs point to falling efficiency and poor IAQ. A modern central air or heat pump system with a variable speed blower brings a step-change in filtration, humidity control, and comfort. The indoor air will show it within the first cooling cycle.
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<h2>Case notes from across Maricopa County</h2>
Arcadia, 85018: A 1960s ranch with leaky returns had visible dust streaks at the filter slot. A Lennox variable speed air handler with a MERV 13 media cabinet and sealed return box cut dust on furniture by half in the first week. The owner also reported less morning congestion.
Desert Ridge, 85050: A two-story with a bonus room ran a 5-ton single-speed system that short-cycled. A Trane inverter heat pump with zoning and new returns held upstairs within 1°F of the setpoint at dusk. Filter loading evened out. Dust on stairs declined, and energy use dropped by a visible margin on the first bill.
Ahwatukee, 85044: A west-facing home near South Mountain Park had afternoon odor carryover from the kitchen. New duct sealing and a Carrier system with programmed circulate fan cleared odors in under 20 minutes after cooking. Coils stayed clean through monsoon with UV-C and a proper drain trap.
North Mountain, 85021: An older property with a rooftop unit struggled with office headaches in late afternoons. A Rheem RTU upgrade with high-MERV filters, CO2-based ventilation control, and drain pan refit ended the odor complaints. Tenant surveys showed fewer symptoms within two weeks.
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<h2>Brand-by-brand considerations under Phoenix heat</h2>
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<li>Trane and American Standard: strong in high-heat duty, steady compressors, good match for large ranch layouts</li>
<li>Carrier and Lennox: quiet operation and smart controls that help low-speed filtration cycles</li>
<li>Goodman, Rheem, York: solid value with variable speed options that still hit SEER2 targets</li>
<li>Mitsubishi Electric and Daikin: ductless and inverter tech that shine in zone applications and garage conversions</li>
<li>Hybrid and zoned systems: best for mixed-use spaces or homes with large exposure differences</li>
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<h2>Engineering details that separate a clean install from a dusty one</h2>
Line set brazing with nitrogen prevents scale and keeps the TXV from fouling. A deep vacuum to 500 microns or better removes moisture that would react with refrigerant. A proper trap on the condensate line prevents air draw that blows dust into the air handler. Cabinet seams sealed with mastic and foam gaskets cut bypass that would streak the insulation with dust. Supply boots sealed to drywall stop attic air from bleeding into rooms along the trim. Blower commissioning locks in CFM that match coil and filter drop. Without these steps, even premium equipment will shed IAQ benefits in weeks.
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<h2>Service coverage zones and Phoenix context signals</h2>
Day & Night offers ac installation service Phoenix wide. The team works across 85001, 85016, 85018, 85021, 85032, 85044, 85050, and 85085. Crews handle projects near Camelback Mountain trailheads, along the Biltmore corridor, by Phoenix Sky Harbor International Airport, near Chase Field downtown, and across neighborhoods flanking the Desert Botanical Garden. Technicians reach Scottsdale, Tempe, Mesa, Glendale, Peoria, Chandler, and Gilbert with the same standards. These proximity signals matter because building styles, attic designs, and dust loads differ by micro-area in Maricopa County.
The installation approach respects local code and SEER2 requirements. Crews are NATE-certified and follow ROC #133378 licensing standards. Each job includes Manual J load calculations and airflow verification. These steps support both efficiency and indoor air quality on day one and day 1,001.
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<h2>How Day & Night ties IAQ into every HVAC replacement</h2>
The company does not treat IAQ as a later add-on. Each proposal includes a filtration plan with MERV targets, a duct sealing scope, a drain strategy, and blower programming notes. The install team documents static pressure and refrigerant charge. They set thermostat profiles to run low-speed air over longer spans. Optional UV-C and media cabinets are offered with clear pros and cons. The team explains filter service steps and schedules the first check-in before monsoon season. That is how clients in Phoenix see and feel cleaner air without guessing.
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<h2>Ready to improve indoor air quality with a new system?</h2>
Day & Night Air Conditioning, Heating, & Plumbing installs central air conditioners, heat pumps, ductless mini-splits, and packaged rooftop units across Phoenix, AZ. The crew specializes in energy-efficient cooling, Manual J-backed sizing, and variable speed airflow that supports clean, healthy air. Ask about current financing and utility rebate opportunities for SEER2-compliant systems. Most residential installations come with 10-year parts warranties from leading brands.
Call or request a visit for ac installation service Phoenix homeowners trust. Get a free installation quote with a room-by-room load calculation. Service coverage includes Arcadia, Biltmore, Desert Ridge, Moon Valley, Paradise Valley Village, North Mountain, and nearby zip codes 85001, 85016, 85018, 85021, 85032, 85044, 85050, and 85085. Licensed, bonded, and insured under Arizona ROC #133378. NATE-certified installers. Map-ready arrival windows. Photo ID techs. Clear pricing. Clean installs that keep your air as fresh as your comfort.
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<strong>Day & Night Air Conditioning, Heating & Plumbing</strong>
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3669 E La Salle St,<br>
Phoenix, AZ 85040
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<small>AZ Licenses: ROC335883 | ROC335884</small>
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