23 HVAC Repair Contractors in Frederick, MD

4.7 avg rating
10,758 total reviews12 offer 24/7 service
Need emergency service? 14 HVAC providers in Frederick offer 24/7 availability

Top-Rated HVAC Repair Contractors in Frederick

#1

Smock Heating & Air

5.0(1,711 reviews)
Highly Rated

Every reviewer award Smock Heating & Air a perfect 5 stars, with customers highlighting same-day arrivals, thorough clean-up practices, and technician…

1539 Tilco Dr Unit 104, Frederick, MD 21704
Call
#2

TriState Home Services

4.8(1,715 reviews)
24/7 Highly Rated

Every visible reviewer awarded 5 stars, with multiple customers specifically naming the technician who assisted them and describing detailed explanations…

82A Wormans Mill Ct, Frederick, MD 21701
Call
#3

May's Heating & Air Conditioning

5.0(945 reviews)
Highly Rated

Five reviewers specifically named technicians Brian, Todd M., Karen, or the team, describing diagnostic thoroughness and same-day response. Multiple customers…

8420 Gas House Pike DD, Frederick, MD 21701
Call

All HVAC Repair Contractors (23 total)

Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical

4.8(991)
24/7 Highly Rated

Nearly all reviews mention specific technicians by name and praise punctuality and professionalism, with…

5744 Industry Ln Suite N, Frederick, MD 21704
Call

United Air Temp

4.7(928)
24/7

Among nine verified reviews, six five-star entries uniformly praise technician professionalism and on-time…

5305 Jefferson Pike Suite 5, Frederick, MD 21703
Call

Honest Air Heating & Air Conditioning

5.0(568)
Highly Rated

Every reviewer awards five stars, with technicians named across multiple reviews including Stephen, Joseph,…

511 N Bentz St, Frederick, MD 21701
Call

Markool Heating Cooling Plumbing

4.9(565)
24/7 Highly Rated

Every reviewer awarded 5 stars, with multiple customers noting same-day response times and the company's…

5304C Kings Ct, Frederick, MD 21703
Call

Warner Service

4.8(558)
24/7 Highly Rated

Every reviewer mentions same-day or emergency response times, with several specifically naming technicians…

217 Monroe Ave, Frederick, MD 21701
Call

Frederick Air Inc

4.8(554)
24/7 Highly Rated

All five-star reviewers mention specific technicians by name, with Jason, Jeff, Mike, Justin, and Caleb…

3 King Ave, Frederick, MD 21701
Call

BPM Heating, Cooling & Plumbing

5.0(398)
Highly Rated

All 398 reviews award 5 stars, a rare achievement indicating consistent customer satisfaction. Multiple…

300 E 4th St Unit A, Frederick, MD 21701
Call

Airtron Heating & Air Conditioning

4.5(774)
24/7

774 reviews yield a 4.5-star average, with four named technicians receiving consistent praise for diagnostic…

5123 Pegasus Ct Suites K-N, Frederick, MD 21704
Call

Aero Energy

4.9(229)
Highly Rated

Seven of eight reviewers awarded five-star ratings, with recurring themes of same-day emergency response,…

8038 Liberty Rd, Frederick, MD 21701
Call

Amerilogic

5.0(146)
Highly Rated

Five-star ratings dominate the feedback, with 146 reviews producing a perfect 5.0 average. Reviewers…

5100 Buckeystown Pike suite 250, Frederick, MD 21704
Call

Wyant Service Experts

4.8(168)
24/7 Highly Rated

One hundred sixty-eight reviews cluster tightly at the five-star level, with clients consistently praising…

4959 New Design Rd, Frederick, MD 21703
Call

Alexair, LLC

5.0(120)
Highly Rated

Seven of seven sampled reviewers awarded 5-star ratings and specifically mentioned same-day or rapid-response…

427 Megan Ct, Frederick, MD 21701
Call

Michael & Son Services

4.4(183)
24/7

Of 183 reviews informing the 4.4-star rating, dissatisfied customers cite insufficient diagnosis combined…

5730 Industry Ln, Frederick, MD 21704
Call

Tetteris Hvac llc.

4.6(102)

Two of three substantive reviews describe same-day or rapidly-responsive service during heat wave…

8600 Chestnut Grove Rd, Frederick, MD 21701
Call

Mid-Atlantic Comfort Specialists

4.5(48)

Three of four detailed reviews award five stars, citing specific technician competence, same-day…

11327 Liberty Rd B, Frederick, MD 21701

Prime AC Repair Frederick

5.0(16)
24/7

Three of eight reviewers specifically praise 45-minute response times during emergencies, while two mention…

19 Industry Ln, Frederick, MD 21704
Call

America's Green Heating & AC Co., LLC.

4.5(15)

Twelve of fifteen reviewers awarded five stars, citing honesty, fair pricing, and technician professionalism.…

6907 Baltimore National Pike #7, Frederick, MD 21702
Call

Holtzople Heating, Air Conditioning & Electrical Services

5.0(11)
24/7

All 11 client reviews award 5 stars, with multiple reviewers highlighting same-day availability, arrival…

176 Thomas Johnson Dr # 104, Frederick, MD 21702
Call

Precision Heating & Cooling, Inc.

2.8(12)
24/7

Four of five detailed reviews address specific service scenarios: two praise honest diagnostic practices, one…

10542 Liberty Rd, Frederick, MD 21701
Call

Jacks Heating & AC

5.0(1)

One client awarded 5 stars and described the company as wonderful, noting courteous and very helpful service…

9307 Oak Spring Ct, Frederick, MD 21701
Call

HVAC Repair Costs in Frederick

Typical heating and cooling repair costs in Frederick, by component.

ServiceLowAverageHigh
Diagnostic / service call
$75$120$200
Thermostat replacement
$150$275$500
Blower motor replacement
$400$650$1,100
Heat exchanger replacement
$1,500$2,200$3,500
Ignitor replacement (gas furnace)
$150$250$400
Control board replacement
$300$550$900
Full system repair (major)
Multi-component failure
$500$1,200$3,000

Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

HVAC Repair in Frederick, MD: What to Expect

Frederick faces climate challenges that push home comfort systems to their limits. Summer heat combined with humidity forces cooling equipment to run constantly, while winters near 27 F demand dependable heating. These fluctuations keep local contractors engaged, with 23 professionals serving the area who maintain a 4.7 average rating across over ten thousand reviews.

Pricing information reflects the specific scope of each repair. A diagnostic or service call typically runs $75-$200, while a thermostat replacement costs $150-$500 and a blower motor replacement ranges $400-$1100. Maryland requires all HVAC contractors to hold a Master HVACR License from the state Department of Labor, establishing baseline trade qualifications that protect homeowners from unqualified operators. Costs correspond directly to parts prices and labor complexity, with blower motor work generally exceeding thermostat work due to mechanical intensity.

Customers recognize specific technicians by name for reliable service. Brian and Todd M. from May's Heating & Air Conditioning receive recurring praise for accurate diagnostics and same-day response, while Smock Heating & Air draws endorsements for thorough clean-up practices and technician willingness to explain system conditions to homeowners.

Frequently Asked Questions

HVAC repairs in Frederick range from $75-$3,500 depending on the component. Thermostat replacement runs $150-$500, blower motor $400-$1,100, ignitor $150-$400, and heat exchanger replacement $1,500-$3,500. Diagnostic fees of $75-$200 are typically credited toward the repair if you proceed.

All HVAC Contractors in Frederick, MD

Complete directory of 33 contractors — browse alphabetically

A–Z