HVAC in Alpharetta, GA

HVAC in Alpharetta, GA | One Hour Heating & Air

Licensed under Georgia HVAC GAREGCN2011384, One Hour Heating & Air Conditioning of North Atlanta handles 24/7 HVAC repair, installation, and maintenance for Alpharetta homeowners from our office at 1360 Union Hill Rd, 8 minutes from downtown Alpharetta via Old Milton Parkway. Our technicians are EPA 608 certified (certification number PFWXHNZ4MT) and NATE certified (1023518), factory authorized on Daikin, Trane, Rheem, and Carrier, and every job carries our “Always On Time…Or You Don’t Pay A Dime!®” guarantee plus a 100% Satisfaction Guarantee for two years.

Most Alpharetta homes were built between 1995 and 2010, which means a large share of the city’s HVAC equipment is now 15 to 30 years old and at or past typical replacement age in this climate (AC systems last 10 to 15 years here; gas furnaces 15 to 20). If your AC was the original equipment in a Windward or Crooked Creek build, you’re in the window where parts get harder to source, R 22 refrigerant (phased out and now five times the cost it was in 2015) makes repair vs replace math obvious, and SEER2 rated replacements pay back in 4 to 7 years on Georgia Power bills. We’ll tell you straight whether you’re at that point or whether a repair gets you another season.

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Georgia HVAC license GAREGCN2011384

EPA 608 certification PFWXHNZ4MT

NATE certification 1023518

Daikin

Trane

Rheem

Carrier

Why Alpharetta Homeowners Call One Hour

Alpharetta has more 15 to 30 year old HVAC systems concentrated in master planned subdivisions than almost any other North Fulton city. That’s not a generic statement, it’s the dominant pattern across Windward, Crooked Creek, White Columns, and the Webb Bridge corridor, where the original equipment from 1990s and 2000s buildouts is failing on the same predictable timeline.

That shapes how we work in this city:

24/7 service with no after hours premium. Same flat rate at 2 AM in July as at 2 PM in October. The trucks are stocked with the capacitors, contactors, blower motors, and refrigerant most common to the 13 SEER and 14 SEER systems installed across Alpharetta subdivisions in the late 1990s and 2000s.
Upfront flat rate pricing in writing before any work starts. You see the number, you approve the number, the number doesn’t change.
Factory authorization on Daikin, Trane, Rheem, and Carrier. These four brands cover the equipment in most Alpharetta homes, including the OEM units in master planned communities where developers used a single brand across an entire phase.
Two year satisfaction guarantee on workmanship, not the 30 or 90 days most companies offer.

We respect you, we respect your time. If we’re late to a confirmed appointment, you don’t pay.

Top HVAC Services We Provide in Alpharetta

AC Repair in Alpharetta

Capacitor failures, refrigerant leaks at the evaporator coil, condensate drain clogs from pollen sludge, and blower motor failures are the four most common AC service calls in Alpharetta. Most are diagnosed and repaired in one visit because the parts are on the truck.

AC Installation in Alpharetta

Two story homes in Windward, Crooked Creek, and the Webb Bridge corridor often have undersized return air on the second floor, a sizing issue that won’t show up on a like for like replacement quote from a company that doesn’t open the registers and measure. We do.

Heat Pump Installation in Alpharetta

The federal Section 25C tax credit expired December 31, 2025, but Georgia’s GEFA Home Energy Rebates program (energyrebates.georgia.gov) covers up to $16,000 for qualifying installations, including replacing a gas furnace plus AC with a heat pump. Georgia Power’s HEIP adds up to $1,250 for home comfort bundles.

Furnace Repair and Installation in Alpharetta

Most Alpharetta homes have a gas furnace paired with the AC. Furnaces last 15 to 20 years in this climate, so 1990s and 2000s builds are right at the edge of replacement timing. Dual fuel conversions (heat pump + gas furnace backup) are increasingly the right answer after the December 2022 and January 2025 polar vortex events made backup heat capacity a real consideration.

Ductwork Repair and Sealing in Alpharetta

Original 1990s ductwork in unconditioned attics across Alpharetta’s two story subdivisions commonly leaks 20 to 30%. That’s money you’re paying Georgia Power to condition your attic. Duct sealing qualifies for the Georgia Power HEIP home comfort bundle rebate.

Indoor Air Quality and Dehumidifiers in Alpharetta

North Fulton’s heavy oak, pine, and cedar pollen season (February through May) plus 70%+ summer humidity makes whole home dehumidifiers, MERV 13+ filtration, and UV C lamps a measurable difference for Alpharetta homes, especially those with mature canopy in Crooked Creek and the older Webb Bridge sections.

Smart Thermostat Installation in Alpharetta

Georgia Power’s HEIP gives a $75 instant rebate per smart thermostat replacing a 10+ year old standard model. In multi zone homes (common in Windward and Halcyon), a coordinated zone control upgrade pays back faster than the single stat retrofit.

HVAC Maintenance and Comfort Club in Alpharetta

Our Comfort Club covers seasonal tune ups, priority scheduling, and discounted repair pricing. For homes with original 1990s and 2000s equipment that’s still running, maintenance is what extends the last 2 to 5 years out of it before replacement.

Pricing and offers

Our service call and diagnostic is $89. That covers a certified technician visit, a full system diagnostic, and a written estimate. The fee is waived if you proceed with the recommended repair, and it’s free for Comfort Club members.

There’s no after hours premium. The 2 AM rate equals the 2 PM rate. All repair and installation quotes are flat rate, written, and approved before any work starts.

AC repair: $228 to $3,000+

Where you fall in that range depends on the part. A capacitor swap sits near the low end; a compressor or evaporator coil refrigerant leak repair runs into the middle and upper range.

Furnace repair: $361 to $2,575

A thermocouple or igniter replacement comes in at the low end. Heat exchanger work and blower motor assembly replacement push toward the high end.

AC replacement: $2,500 to $8,000+

Drives the range: tonnage, SEER2 rating, brand, and whether the existing ductwork and refrigerant lines can be reused or need to be replaced. Financing is available as low as $109/month for a full system.

Furnace replacement: $2,500 to $8,000+

Drives the range: efficiency rating (80% AFUE vs 96%+ condensing), input BTU, and whether venting can be reused. Same financing applies.

Complete HVAC system (AC + furnace or full heat pump system): $7,000 to $25,000+.

This is the range for a coordinated replacement of both pieces. For a 1995 Crooked Creek build where both the AC and furnace are original equipment, the top of this range buys variable speed, two stage, or full heat pump conversion with new line sets.

Comfort Club annual maintenance plan: $177/year

Includes one AC tune up, one furnace tune up, priority scheduling, and 15% off all repairs. For homes with 15+ year old equipment, the two tune ups frequently catch degraded capacitors, weak contactors, and dirty coils before they turn into emergency calls in July. [VERIFY: confirm any additional Comfort Club benefits beyond tune-ups, priority dispatch, and 15% off repairs]

Rebate stacking (these stack on top of our pricing where applicable):

Georgia Power HEIP: $75 per smart thermostat replacing a 10+ year old standard model, $1,000 instant rebate for heat pump water heaters (50% of cost up to $1,000), up to $1,250 for home comfort bundles (insulation + duct sealing + air sealing).
Georgia GEFA Home Energy Rebates: up to $16,000 income dependent (energyrebates.georgia.gov).
Federal Section 25C credit for air source heat pumps expired 12/31/2025; geothermal still qualifies under Section 25D through 2032.

Need HVAC service in Alpharetta, GA

24/7 dispatch. Upfront flat rate pricing. "Always On Time...Or You Don't Pay A Dime!"

Recent Work Near Alpharetta

Windward, two story home, second floor zone running 6°F warmer than first floor in August, diagnosed undersized return air on upper level, added supplemental return, balanced zones, customer’s August Georgia Power bill dropped $74.

Crooked Creek, 1998 build with original Trane XL14i finally failing, full system replacement to Trane XR16 (16 SEER2), eligible for Georgia Power HEIP home comfort bundle when paired with duct sealing, completed in one day.

Avalon area townhome, condensate drain backup flooding pan during pollen heavy April, cleared blockage, added drain line treatment as part of Comfort Club, no repeat call.

Neighborhoods We Serve in Alpharetta

Windward

Windward anchors the city’s master planned subdivision pattern. Most original equipment is from the late 1990s through mid 2000s, and current homeowners are facing the first major HVAC replacement, often with the question of whether to convert to a heat pump or stay on the gas furnace + AC pairing.

Crooked Creek

Crooked Creek has similar build era patterns but with heavier mature canopy from established oak and pine, which means heavier pollen and coil maintenance load every spring.

White Columns

White Columns estate scale homes often have multi zone systems (3 or 4 air handlers) and longer duct runs. Replacement projects here involve coordinated zone balancing, not just like for like equipment swaps.

Avalon and Halcyon

Avalon and Halcyon mixed use developments and townhomes need different work than the standard subdivision home. Most calls here are coordinated smart thermostat installs, HOA restricted outdoor unit placement [VERIFY: confirm specific HOA requirements per development], and condensate routing on stacked or attached construction.

Downtown Alpharetta and the Old Milton Parkway corridor

Downtown Alpharetta and the Old Milton Parkway corridor include older 1960s and 1980s ranch and split level homes. Most are on their second or third HVAC system but still running original 1970s ductwork in attics, which is where the bigger efficiency gains usually live.

Meet the Alpharetta Team

Our Alpharetta crew is dispatched from our Union Hill Rd office. Every technician is EPA 608 certified (certification number PFWXHNZ4MT), NATE certified 1023518, and we’re factory authorized on Daikin, Trane, Rheem, and Carrier.

Gallery and Video

What Alpharetta Homeowners Are Saying

Real reviews from real neighbors.

"AC went out on a Saturday afternoon in Windward. They had a tech here within two hours and we were cool again before dinner. Honest pricing, no upsell pressure."

Jessica M. · Google

"Replaced our 1998 Crooked Creek system. The crew was clean, on time, and walked me through every step. House has never felt this comfortable."

David R. · Google

"Signed up for the Comfort Club after our spring tune-up. Friendly, professional, and clearly knew their way around our two-story attic ductwork."

Priya S. · Yelp

FAQs About HVAC in Alpharetta

My Alpharetta home was built in 1998. Should I be planning to replace my AC even if it’s still running?

If it’s the original equipment and uses R 22 refrigerant (phased out, now five times the 2015 cost), the math usually favors replacement once a major repair quote exceeds 50% of replacement cost. For 1998 equipment, that threshold gets hit on the first significant refrigerant leak or compressor issue. A like for like 14 SEER2 replacement typically pays back in 4 to 7 years on Georgia Power bills.

Do I need HOA approval to replace my outdoor AC unit in Windward or Avalon?

For most master planned Alpharetta subdivisions, the answer is yes if the unit changes location, footprint, or visibility from the street. We pull the existing pad and replace in place when possible, which usually avoids review. [VERIFY: confirm specific Windward, Avalon, Crooked Creek HOA review thresholds, varies by community]

Is the federal heat pump tax credit still available in 2026?

No. The federal Section 25C tax credit for air source heat pumps expired December 31, 2025 under the One Big Beautiful Bill Act. Geothermal heat pumps still qualify for the 30% Section 25D credit through 2032. The Georgia state GEFA Home Energy Rebates program (up to $16,000 income dependent) is now the primary heat pump incentive, visit energyrebates.georgia.gov to check eligibility.

My second floor is always warmer than the first floor in summer. Is that a sizing problem or a duct problem?

Both, usually, in two story Alpharetta subdivisions. The original 1990s and early 2000s installs in Windward, Crooked Creek, and similar communities often have undersized return air on the second floor and ductwork in unconditioned attic space leaking 20 to 30%. The diagnostic involves measuring static pressure, checking return air sizing, and inspecting attic ductwork, not just adding more BTUs of cooling.

Do you service homes in unincorporated Alpharetta area Fulton County, or only inside city limits?

Both. Our service area covers Alpharetta city limits plus surrounding North Fulton, including unincorporated areas south toward Sandy Springs and north toward Milton. Same flat rate pricing, same response times.

What’s the difference between a Comfort Club membership and just calling when something breaks?

Comfort Club is $177/year. It includes two seasonal tune ups (one for cooling, one for heating), priority dispatch (you get scheduled ahead of non members), 15% off all repairs, and a waived diagnostic fee. For homes with 15+ year old equipment, the tune up component frequently catches degraded capacitors, weak contactors, and dirty coils before they become an emergency call in July.

Why does my AC freeze up during pollen season in April and May?

Heavy oak, pine, and cedar pollen across North Fulton coats evaporator coils and clogs condensate drains. The coil can’t release heat efficiently, the system runs longer, and eventually freezes over. Spring tune ups specifically address this: coil cleaning, drain treatment, and filter replacement before pollen peaks.