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Frederick, MD

HVAC Contractors in Frederick, MD

61 HVAC contractors in Frederick, Maryland, with Google ratings, hours and websites where the business has them.

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61 HVAC contractors serving Frederick

Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.

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  • Smock Heating & Air in Frederick, MD

    HVAC Contractors

    Smock Heating & Air

    Smock Heating & Air serves Frederick and Montgomery County with heating and cooling services since 2005. The company provides air conditioning repair and installation, furnace and heat pump services, indoor air quality solutions, and water heater installation. With over 1,500 Google reviews, same-day emergency service and maintenance memberships are available.

    AC repairFurnace serviceHeat pump service

    Frederick, MD5.0(1822)Closed nowWebsite

    Up to 3 businesses
  • TriState Home Services in Frederick, MD

    HVAC Contractors

    TriState Home Services

    TriState Home Services provides HVAC, plumbing, electrical, and drain services in Maryland and Virginia. The company installs and repairs air conditioning and heating systems, furnaces, heat pumps, boilers, and geothermal systems. Plumbing services include installation, maintenance, repairs, water heaters, gas lines, and sump pumps.

    HVAC Installation & RepairPlumbing ServicesElectrical Services

    Frederick, MD4.8(1750)Open nowWebsite

    Up to 3 businesses

  • HVAC Contractors

    Tuckers Air Conditioning Heating & Plumbing

    Frederick, MD4.9(1567)Website

    Up to 3 businesses
  • Wenbrooke Services - Electrical Plumbing Heating and Air in Frederick, MD

    HVAC Contractors

    Wenbrooke Services - Electrical Plumbing Heating and Air

    Wenbrooke Services – Electrical, Plumbing, Heating and Air at 4907 International Blvd #113 delivers trusted home service in Frederick, MD. Need AC Repair or Furnace Repair fast? We provide expert air conditioning repair service, AC Installation, and seasonal maintenance. Our licensed Plumber team handles Plumbing Repair, Drain Cleaning, Leak Detection, and Water Heater Repair. Our certified Electrician services include troubleshooting, wiring, and Electrical Panel Upgrades. Family-owned since 2015, we offer upfront options, quality workmanship, and reliable comfort solutions.

    Frederick, MD4.8(1340)Open nowWebsite

    Up to 3 businesses
  • Larry & Sons Plumbing Heating Cooling Drain & Electrical in Frederick, MD

    HVAC Contractors

    Larry & Sons Plumbing Heating Cooling Drain & Electrical

    Larry & Sons Plumbing Heating Cooling Drain & Electrical provides heating and cooling services including furnace, boiler, and AC repair and installation, plus plumbing and electrical services. Services include drain cleaning, water heater repair and installation, and electrical wiring.

    Heating repairHeating installationAC repair

    Frederick, MD4.8(1062)Open nowWebsite

    Up to 3 businesses

  • HVAC Contractors

    Mays Heating & Air Conditioning

    Frederick, MD5.0(839)Website

    Up to 3 businesses

  • HVAC Contractors

    Markool Heating Cooling Plumbing

    Frederick, MD4.9(535)Website

    Up to 3 businesses

  • HVAC Contractors

    Frederick Air Inc

    Frederick, MD4.8(411)Website

    Up to 3 businesses

  • HVAC Contractors

    BPM Heating Cooling & Plumbing

    Frederick, MD5.0(362)Website

    Up to 3 businesses
  • B&B Air Conditioning & Heating Service in Frederick, MD

    HVAC Contractors

    B&B Air Conditioning & Heating Service

    B&B Air Conditioning & Heating Service has served Maryland and Virginia since 1957, with locations in Rockville, Frederick, Annapolis, Gaithersburg, and Fairfax, plus Sterling, Virginia. The company provides 24/7 emergency HVAC services including heating system installation and repair, cooling systems, air quality solutions, and related maintenance for residential and commercial customers.

    HVAC installationHVAC repairHeating systems

    Frederick, MD4.8(273)Open nowWebsite

    Up to 3 businesses

  • HVAC Contractors

    Urbana HVAC

    Frederick, MD5.0(168)Website

    Up to 3 businesses

  • HVAC Contractors

    American Air LLC. MD.

    Frederick, MD5.0(144)Website

    Up to 3 businesses

  • HVAC Contractors

    Alexair LLC

    Frederick, MD5.0(118)Website

    Up to 3 businesses

  • HVAC Contractors

    Mid-Atlantic Comfort Specialists

    Frederick, MD4.5(48)Website

    Up to 3 businesses

  • HVAC Contractors

    STULZ Air Technology Systems Inc. (STULZ USA)

    Frederick, MD4.2(22)Website

    Up to 3 businesses

  • HVAC Contractors

    Weather Masters Corporation

    Frederick, MD4.8(17)Website

    Up to 3 businesses

  • HVAC Contractors

    Heating & Air Conditioning

    Frederick, MD5.0(9)

    Up to 3 businesses

  • HVAC Contractors

    Akron Industrial Heating & Cooling

    Frederick, MD4.5(8)Website

    Up to 3 businesses

  • HVAC Contractors

    Precision Heating & Cooling Inc.

    Frederick, MD2.8(12)Website

    Up to 3 businesses

  • HVAC Contractors

    Maryland Mechanical Services HVAC LLC

    Frederick, MD5.0(6)Website

    Up to 3 businesses

  • HVAC Contractors

    Heating & Air Conditioning

    Frederick, MD4.8(6)Website

    Up to 3 businesses

  • HVAC Contractors

    Frederick Heating & Air Conditioning Services

    Frederick, MD4.6(5)Website

    Up to 3 businesses

  • HVAC Contractors

    Fast Heating Repair by Airtron

    Frederick, MD4.3(4)Website

    Up to 3 businesses

  • HVAC Contractors

    Pura Vida Heating & Cooling

    Frederick, MD5.0(3)Website

    Up to 3 businesses

  • HVAC Contractors

    Mechanical Aire

    Frederick, MD5.0(2)Website

    Up to 3 businesses

  • HVAC Contractors

    N&D Services

    Frederick, MD5.0(2)Website

    Up to 3 businesses

  • HVAC Contractors

    April Air-Conditioning & Heating

    Frederick, MD2.3(3)Website

    Up to 3 businesses

  • HVAC Contractors

    Jacks Heating & AC

    Frederick, MD5.0(1)Website

    Up to 3 businesses

  • HVAC Contractors

    R-Tech Services LLC

    Frederick, MD5.0(1)

    Up to 3 businesses

  • HVAC Contractors

    W.G./Welch LLC Mechanical Contractor

    Frederick, MD5.0(1)Website

    Up to 3 businesses

  • HVAC Contractors

    Woodlawn Mechanical Contractors

    Frederick, MD4.0(1)Website

    Up to 3 businesses

  • HVAC Contractors

    Air Mechanical Systems

    Frederick, MD1.0(1)

    Up to 3 businesses

  • HVAC Contractors

    Air and Vac Services

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Air Technology

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    American Air Conditioning & Heating

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Antietam Heating And Air Conditioning

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Appliance Repair Today

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Apt Heating & Cooling Repair

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    A Ronald Maclaren Heating & Air Conditioning

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Dan's Air

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Dave's Cooling & Heating

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Doherty Enterprise

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Eric Dvorak HVAC/R

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Eric Smock Heating & Air Conditioning Inc.

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Ewin Service HVAC

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Experienced Heating & Cooling Repair

    Frederick, MD

    Up to 3 businesses

  • HVAC Contractors

    Frederick Air

    Frederick, MDWebsite

    Up to 3 businesses

  • HVAC Contractors

    Goodat Heating & Cooling Repair

    Frederick, MD

    Up to 3 businesses

Page 1 of 2 · 48 of 61 shown. Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.

Top rated

Highest-rated hvac contractors in Frederick

Ranked by Google rating, then review count. Only businesses rated 4.5 or higher with 5+ Google reviews qualify.

  1. Smock Heating & Air

    5.01,822 Google reviewsVerified

    AC repair · Furnace service · Heat pump service

  2. Mays Heating & Air Conditioning

    5.0839 Google reviewsVerified

  3. BPM Heating Cooling & Plumbing

    5.0362 Google reviewsVerified

  4. Urbana HVAC

    5.0168 Google reviewsVerified

  5. American Air LLC. MD.

    5.0144 Google reviewsVerified

  6. Alexair LLC

    5.0118 Google reviewsVerified

See every hvac contractors in Frederick sorted by rating · Best of Frederick across every trade

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Compare quotes in Frederick

61 HVAC contractors serve Frederick, MD. 26 are rated 4.5 or higher on Google and 14 have a perfect 5.0. 39 have a website. Most common services: AC repair, Drain cleaning, AC installation, Cooling services, Ductless systems, Ductwork service….

Verified on Google
22
Average rating
4.5 / 5
Google reviews
10,543

How Google categorizes hvac contractors in Frederick

Primary and secondary categories from each business’s Google Business Profile. Tap one to filter the list.

Services hvac contractors in Frederick list on Google

Service names as each business entered them on its Google Business Profile, with how many businesses list each one.

What reviewers mention

knowledgeable staff (1056) · courteous staff (381) · knowledgeable technician (257) · thoroughness (209) · water heater replacement (141) · punctuality (84) · clear explanations (68) · maintenance program (49) · informative staff (33) · humidifier installation (26) · furnace replacement (20) · estimates (18)

Topics Google extracted from customer reviews of hvac contractors in Frederick, with the number of reviews that mention each.

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More services in Frederick

All 59 services in Frederick

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How HVAC contractors in Frederick compare

HVAC ContractorsFrederickMDU.S.
Average Google rating (10+ reviews)4.714.74.69
Median Google reviews152225
Reviews for the top quarter374+102+108+
Have a website65%64.5%60.6%

Businesses listed in our directory, not every business in the market. Updated November 2026. HVAC Contractors industry report · What is a good rating for HVAC contractors? · Best cities for HVAC contractors

From Page One Partner Research

  • In Frederick, half of the HVAC contractors we list with reviews have 15 or fewer Google reviews, and 374+ puts one in the local top quarter; the average rating is 4.71 (60 listed in our directory). HVAC Contractors industry report
  • A good Google rating for HVAC contractors: in our directory, the median is 4.8 and at least a quarter hold a perfect 5.0. Half of them have 25 or fewer reviews. What is a good rating for HVAC contractors?
  • Maryland businesses in our directory average 4.56 stars on Google, ranking 13 of the 50 states we measured; 28.3% list no website. Ratings in every state

Quick answers

Who serves Frederick?

Names and Google ratings, straight from each business's profile.

Which HVAC contractors serve Frederick, MD?

61 HVAC contractors serve Frederick, MD. Highest rated (10+ reviews): Smock Heating & Air (Verified, rated 5.0 on Google from 1822 reviews), Mays Heating & Air Conditioning (Verified, rated 5.0 on Google from 839 reviews) and BPM Heating Cooling & Plumbing (Verified, rated 5.0 on Google from 362 reviews), plus 58 more.

How many HVAC contractors serve Frederick, MD, and how are they rated?

61 HVAC contractors serve Frederick, Maryland. 26 are rated 4.5 or higher on Google and 14 have a perfect 5.0. 39 have a website. Most common services: AC repair, Drain cleaning, AC installation, Cooling services, Ductless systems, Ductwork service…. ZIP codes covered: 21701, 21704, 21703, 21702, 21705.

Which HVAC contractors in Frederick, MD have the most Google reviews?

Smock Heating & Air (1,822 reviews, rated 5.0), TriState Home Services (1,750 reviews, rated 4.8) and Tuckers Air Conditioning Heating & Plumbing (1,567 reviews, rated 4.9). Review counts are read from each business's Google Business Profile.

Which HVAC contractors in Frederick, MD are open on weekends?

5 HVAC contractors in Frederick, MD publish hours on Google. 5 are open on Saturdays (Smock Heating & Air, TriState Home Services, Wenbrooke Services - Electrical Plumbing Heating and Air and Larry & Sons Plumbing Heating Cooling Drain & Electrical and 1 more) and 4 on Sundays (Smock Heating & Air, TriState Home Services, Wenbrooke Services - Electrical Plumbing Heating and Air and Larry & Sons Plumbing Heating Cooling Drain & Electrical). Use the Open now filter above to see who is open right now.

What kinds of HVAC contractors are in Frederick, MD?

Google lists them under Air conditioning contractor (5), HVAC contractor (5), Air conditioning repair service (4), Heating contractor (4), Air conditioning system supplier (3) and Electrician (3). A business can carry more than one category, so the counts overlap.

HVAC Contractors near Frederick

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