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Emergency HVAC Contractors in Parkville, MD (2026)

Top 50 of 547 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Parkville: Michael & Son Services, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Parkville at a glance

Top emergency HVAC contractors in Parkville at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Michael & Son Services654.7★ (8,039)Baltimore, 5 mi away24/7
2Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical634.8★ (4,514)Baltimore, 12 mi away24/7
3Complete Climate Services LLC635.0★ (786)Baltimore, 7 mi away24/7
4Maryland Heating & Air624.9★ (369)Essex, 6 mi away24/7
5At Your Service Heating and Cooling LLC624.6★ (811)Baltimore, 6 mi away24/7
6Elmar Heating & Cooling624.8★ (614)Timonium, 7 mi away24/7
7Blue Dot Services624.5★ (7,297)Bel Air North, 16 mi away24/7
8Boothe's Heating, Air, Plumbing, Drains & Electrical624.9★ (1,461)Dundalk, 14 mi away24/7
9Alpha Heating & Air Conditioning, LLC624.9★ (419)Arbutus, 8 mi away24/7
10Hughes Mechanical, LLC624.8★ (408)Essex, 6 mi away24/7

Call an emergency HVAC contractor in Parkville now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Parkville, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 547 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Parkville

    #1 Michael & Son Services

    Based in Baltimore, 5 mi away

    65/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.7★ from 8,039 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 8,039 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6420 Erdman Ave, Baltimore, MD 21205
    View profile for Michael & Son Services(410) 929-7190

  7. #7 Blue Dot Services

    Based in Bel Air North, 16 mi away

    62/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.5★ from 7,297 Google reviews, listed on Google as “Heating contractor”.

    • 4.5★ from 7,297 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    125 Industry Ln, Forest Hill, MD 21050
    View profile for Blue Dot Services(410) 846-2992

  16. #16 Farnen & Dermer

    Based in Owings Mills, 13 mi away

    61/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.8★ from 931 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 931 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10500 Reisterstown Rd, Owings Mills, MD 21117
    View profile for Farnen & Dermer(410) 367-7777

  18. #18 A.J. Michaels

    Based in Baltimore, 4 mi away

    61/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.5★ from 309 Google reviews, listed on Google as “HVAC contractor”.

    • 4.5★ from 309 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4512 York Rd, Baltimore, MD 21212
    View profile for A.J. Michaels(410) 435-5400

  19. #19 AAA

    Based in Parkville

    61/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.7★ from 60 Google reviews, listed on Google as “Air conditioning contractor”.

    • 4.7★ from 60 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2907 Taylor Ave, Parkville, MD 21234
    View profile for AAA(410) 661-7557

  20. #20 Broyles HVACR

    Based in Joppatowne, 10 mi away

    60/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 244 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    37 Neptune Dr, Joppatowne, MD 21085
    View profile for Broyles HVACR(667) 228-7015

  24. #24 HGH Mechanical

    Based in Edgewood, 13 mi away

    60/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 337 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2107 Emmorton Park Rd #111, Edgewood, MD 21040
    View profile for HGH Mechanical(410) 679-3794

Top 50 of 547 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Parkville, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Triple E604.9★ (469)16 mi
27Fresh Air Concepts, LLC604.9★ (217)13 mi
28Breezy Heating Ventilation and Air Conditioning594.8★ (121)9 mi
29Anchor Mechanical LLC594.9★ (340)16 mi
30United Air Temp594.4★ (88)4 mi
31F.H. Furr Plumbing, Heating, Air Conditioning & Electrical594.7★ (1,847)23 mi
32Tario HVAC, LLC594.9★ (142)12 mi
33Excel Services594.9★ (411)18 mi
34Rowbel Services595.0★ (32)5 mi
35Aire Serv of Bel Air594.9★ (309)17 mi
36G & G Mechanical Heating & AC594.7★ (51)5 mi
37Environmental Systems Associates594.9★ (658)22 mi
38Ambient LLC594.8★ (336)17 mi
39ARS / Rescue Rooter594.4★ (3,510)23 mi
40First Response Heating & Cooling594.8★ (285)16 mi
41United Air Temp594.9★ (180)15 mi
42Beyond Cooling LLC594.9★ (82)11 mi
43Comfort Air595.0★ (65)11 mi
44Aire-Craft Heating & Cooling Co Inc584.8★ (26)5 mi
45Dalton Air Conditioning Repair585.0★ (44)9 mi
46Warrior Plumbing & Heating584.9★ (400)6 mi
47Synergy Mechanical Solutions585.0★ (37)8 mi
48One Hour Air Conditioning & Heating® of Harford County584.8★ (292)18 mi
49Baltimore HVAC Repair Elite585.0★ (10)2 mi
50Greenfox Cooling, Heating & Plumbing584.8★ (238)18 mi

How we ranked emergency HVAC contractors in Parkville

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Parkville: questions

Which HVAC contractors in Parkville are open 24/7?

25 on this list post 24/7 hours, including Michael & Son Services, Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, Complete Climate Services LLC, Maryland Heating & Air and At Your Service Heating and Cooling LLC.

Who is ranked #1 for emergency heating and cooling in Parkville, MD?

Michael & Son Services is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Parkville ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Parkville

  1. October 2026: CR Scores recalculated for 547 hvac contractors serving Parkville.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages