Top 10 Geothermal Hvac in Frederick, MD

Updated March 2026 · Based on licensing, reviews & response time

Quick Answer

The best geothermal hvac providers in Frederick, MD for 2026 include Smock Heating & Air (5), Markool Heating Cooling Plumbing (4.9), Frederick Air Inc (4.8).

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1

Wyant Service Experts

4959 New Design Rd, Frederick, MD 21703, USA
★★★★½ 4.8 (167 reviews)
Licensed & InsuredTop Rated
Services: Geothermal Hvac
Frederick, MD (301) 781-7637
2

Frederick Air Inc

3 King Ave, Frederick, MD 21701, USA
★★★★½ 4.8 (419 reviews)
Licensed & InsuredTop Rated
Services: Geothermal Hvac
Frederick, MD (301) 845-5652
3

May's Heating & Air Conditioning

8420 Gas House Pike DD, Frederick, MD 21701, USA
★★★★★ 5 (916 reviews)
Licensed & InsuredTop Rated
Services: Geothermal Hvac
Frederick, MD (301) 660-1400
4

Design Flow Heating & Cooling LLC

5975 Exchange Dr Suite C, Eldersburg, MD 21784, USA
★★★★★ 5 (419 reviews)
Licensed & Insured
Services: Geothermal Hvac
Frederick, MD (443) 878-8278
5

Smock Heating & Air

1539 Tilco Dr Unit 104, Frederick, MD 21704, USA
★★★★★ 5 (1,674 reviews)
Licensed & Insured
Services: Geothermal Hvac
Frederick, MD (301) 945-7220
6

Markool Heating Cooling Plumbing

5304C Kings Ct, Frederick, MD 21703, USA
★★★★½ 4.9 (553 reviews)
Services: Geothermal Hvac
Frederick, MD (301) 732-4244
7

TriState Home Services

82A Wormans Mill Ct, Frederick, MD 21701, USA
★★★★½ 4.8 (1,699 reviews)
Services: Geothermal Hvac
Frederick, MD (301) 241-0429
8

Frederick Heating & Air Conditioning

4801 Broad Run Rd, Jefferson, MD 21755, USA
★★★★½ 4.7 (86 reviews)
Services: Geothermal Hvac
Frederick, MD (240) 674-0814
9

Ground Loop Heating and Air Conditioning

1701 Whiteford Rd, Darlington, MD 21034, USA
★★★★½ 4.9 (236 reviews)
Services: Geothermal Hvac
Frederick, MD (410) 836-1706
10

BPM Heating, Cooling & Plumbing

300 E 4th St Unit A, Frederick, MD 21701, USA
★★★★★ 5 (388 reviews)
Services: Geothermal Hvac
Frederick, MD (240) 887-1089

How We Ranked These Frederick Pros

Our rankings are based on a weighted evaluation of five key factors:

  1. Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
  2. Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
  3. Response Time — Companies offering same-day or 24/7 emergency service score higher.
  4. Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
  5. Experience & Longevity — Years serving the Frederick market and breadth of services factor into overall reliability.

Rankings are reviewed quarterly. Have a correction? Contact us.

Frequently Asked Questions

How much does geothermal hvac cost in Frederick?

Pricing varies. Get 2-3 local quotes.

Common Geothermal Hvac Questions

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