Top 7 HVAC companies in Jefferson, Alabama

Jefferson County sits in a moist climate zone with long, humid summers and a balanced heating load. Homeowners replacing equipment face a range of listed contractors whose public ratings have been adjusted for review volume. The shortlist below applies a Bayesian adjustment that pulls every raw star rating toward the national mean of 4.764 until the sample grows large enough to stand alone. Small additional credit goes to firms that publish a website or 24/7 hours.

How to choose

A homeowner should first confirm that any contractor holds an active Heating & Air Conditioning Contractor license through the Alabama Board lookup tool. Next, verify that the firm is accepted by the local building department for permits and, where applicable, belongs to the TVA Quality Contractor Network. Finally, compare the published review count against the raw rating to judge how much the Bayesian adjustment moved the score.

The shortlist

Paradise Heating and Air

Paradise Heating and Air operates from 5372 Riverbend Trail, Hoover, AL 35244 and lists (205) 326-7268. Its 305 reviews produced a raw 5.0 that the adjustment lifted to 5.039 after tie-breakers for a website and 24/7 service. The national mean sits 0.275 points lower, and the large sample kept the firm well above that mean. The general-contractor category plus round-the-clock hours suggest broad service capacity rather than narrow specialization. These figures still leave open the question of how the firm schedules large installations during peak summer demand.

Gipson Heating & Air Conditioning LLC

Gipson Heating & Air Conditioning LLC lists 136 reviews at a raw 5.0 from 26 Hunter Dr, Trussville, AL 35173, reachable at (205) 494-7366. The adjusted score lands at 4.997, pulled 0.233 above the national mean by the review count and a website listing. General-contractor status without published 24/7 hours points to standard daytime scheduling. The numbers do not reveal whether the firm maintains its own installation crews or subcontracts duct work.

Casper Heating and Cooling

Casper Heating and Cooling recorded 126 reviews for a raw 5.0 at 25 W Oxmoor Rd Ste 10 b, Birmingham, AL 35209, phone (205) 386-2675. Adjustment produced 4.995, still 0.231 above the national mean. The public website supplied the only extra signal. General-contractor status implies the firm handles both residential replacements and light commercial work. Review volume is high enough that further data would likely leave the score nearly unchanged.

Legacy Home Service

Legacy Home Service shows 17 reviews at a raw 5.0 from 5076 Pintail Dr, Harpersville, AL 35078, phone (205) 793-5624. The adjusted score of 4.889 sits 0.125 above the national mean, moved less because the smaller sample receives stronger shrinkage. A website is the sole extra signal. General-contractor status without 24/7 listing suggests daytime-only response. The limited review count leaves open how consistent quality remains across a full year of installations.

Hemphill Services

Hemphill Services posted 184 reviews at 4.8 from 2242 Alton Rd, Birmingham, AL 35210, phone (205) 229-2090. The raw rating sits 0.036 above the national mean; adjustment raised it to 4.855. Both a website and 24/7 availability supplied tie-breakers. The Services category plus continuous hours indicate focused HVAC work and emergency coverage. These figures cannot show how often the firm turns away non-emergency calls during the summer peak.

Alabama Refrigeration Heating & Cooling

Alabama Refrigeration Heating & Cooling holds 20 reviews at 4.8 from 330 Perryman St, Evergreen, AL 36401, phone (251) 578-5220. The raw score sits 0.036 above the national mean and the adjusted score is 4.778. No website or 24/7 listing appears. General-contractor status suggests mixed residential and light commercial work. The modest review count means the adjustment moved the score only slightly, leaving open how representative the sample remains.

Irwin HVAC Services LLC

Irwin HVAC Services LLC recorded 135 reviews at 4.7 from 11229 US-78, Riverside, AL 35135, phone (205) 656-0684. The raw rating lies 0.064 below the national mean; adjustment lifted it to 4.772. A website and 24/7 availability provided the tie-breakers. Services category plus continuous hours point to dedicated HVAC response. The numbers cannot disclose how the firm manages parts inventory for older equipment still common in the county.

Cost

Published installed costs for a full system range from $7,600 to $9,300 with a midpoint of $8,450, while 2025 invoiced averages reach $18,066 and the upper quartile hits $24,272. The two sources therefore differ by more than double on the central figure. Labor is listed at $90 per hour and permit fees fall between $120 and $350 depending on jurisdiction. Lower-tier costs versus national benchmarks appear in the lower published range, yet the invoiced data suggest many projects exceed that range once change orders or duct modifications are added. Homeowners should request itemized quotes that separate equipment, labor, and permit fees.

Licensing and permits

Alabama issues HVAC licenses at the state level through the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors. The license class Heating & Air Conditioning Contractor covers both installation and service. A $20,000 performance bond is required for active status, while the board site states no minimum general-liability insurance amount. Permits themselves are not statewide; each city or county building department sets its own rules and fees. Homeowners must contact the department in the city or unincorporated area where the work occurs to learn exact requirements and inspection steps.

Incentives

Alabama Home Energy Rebates remain conditionally approved and unlaunched, with a planned $8,000 heat-pump rebate still pending. No state tax credit exists. In TVA territory, only Quality Contractor Network members can unlock utility rebates between $150 and $1,500 plus financing. Federal 25C and 25D credits expired at the end of 2025, leaving only the commercial 48E credit available. Consequently, homeowners in TVA areas should first confirm whether a contractor is QCN-listed before discussing equipment choices.

Climate

Jefferson County falls in IECC zone 3A with 2,600 heating degree days and 2,100 cooling degree days. Winter design temperature is 21 °F and summer design reaches 94 °F with high latent load. The balanced mixed load profile and near-universal central-air saturation mean most homes already use heat pumps or straight-cool systems. Long cooling seasons require correctly sized equipment to avoid short-cycling and humidity problems; oversizing remains the most common sizing error in this market.