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Emergency HVAC Contractors in Lake City, SC (2026)

Top 26 of 27 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

8 of the 26 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 Lake City: DH Mechanical, 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 Lake City at a glance

Top emergency HVAC contractors in Lake City at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1DH Mechanical655.0★ (169)Florence, 3 mi away24/7
2Swift Services Heating, Cooling & Electrical634.8★ (560)Florence, 18 mi away24/7
3Hill's Heating & Air Conditioning Services584.9★ (65)Florence, 23 mi away24/7
4A&A Comfort Solutions LLC574.6★ (32)Florence, 20 mi away24/7
5Cayce Company, Inc563.7★ (25)Florence, 19 mi away24/7
6BreezePro AC Repair Florence565.0★ (16)Florence, 23 mi away24/7
7Stephens Heating & Air Conditioning524.0★ (4)Florence, 23 mi away24/7
8AirPure Technologies, LLC505.0★ (14)Florence, 19 mi away24/7
9Allens Cooling and Heating555.0★ (248)Florence, 16 mi away—
10Lake City Heating & Air Conditioning434.7★ (31)Lake CitySat · Sun · Evenings

Call an emergency HVAC contractor in Lake City 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 26 emergency HVAC contractors in Lake City, 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 27 is on the HVAC contractors page.

  1. Ranked #1 in Lake City

    #1 DH Mechanical

    Based in Florence, 3 mi away

    65/100CR Score

    Ranked #1 because of its Google rating and trade focus: 5.0★ from 169 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 169 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for DH Mechanical(843) 617-4368

  4. #4 A&A Comfort Solutions LLC

    Based in Florence, 20 mi away

    57/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.6★ from 32 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 32 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2208 Lakeview Dr, Florence, SC 29505
    View profile for A&A Comfort Solutions LLC(843) 496-9668

  5. #5 Cayce Company, Inc

    Based in Florence, 19 mi away

    56/100CR Score

    Ranked #5 because of its Google rating and trade focus: 3.7★ from 25 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 3.7★ from 25 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2710 S Irby St, Florence, SC 29505
    View profile for Cayce Company, Inc(843) 669-1816

  6. #6 BreezePro AC Repair Florence

    Based in Florence, 23 mi away

    56/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 16 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    100 W Evans St, Florence, SC 29501
    View profile for BreezePro AC Repair Florence(854) 239-3526

  9. #9 Allens Cooling and Heating

    Based in Florence, 16 mi away

    55/100CR Score

    Ranked #9 because of its Google rating and trade focus: 5.0★ from 248 Google reviews, listed on Google as “HVAC contractor”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 248 Google reviews
    Address
    136 W Springbranch Rd, Effingham, SC 29541
    View profile for Allens Cooling and Heating(843) 496-8212

  13. #13 Palmetto Heating & Cooling

    Based in Florence, 19 mi away

    39/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.2★ from 83 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.2★ from 83 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    3695 Claussen Rd, Florence, SC 29505
    View profile for Palmetto Heating & Cooling(843) 669-8050

  14. #14 Cook Comfort Systems LLC

    Based in Florence, 25 mi away

    39/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 61 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat 9 AM–5 PM · Sun 10 AM–3 PM
    Address
    1369 Barr Ln, Florence, SC 29506
    View profile for Cook Comfort Systems LLC(843) 799-5478

  18. #18 Just In Time Mechanical HVAC

    Based in Florence, 15 mi away

    36/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.0★ from 4 Google reviews
    Hours
    Mon–Thu 7:30 AM–6 PM · Fri 7:30 AM–6:30 PM · Sat–Sun closed
    View profile for Just In Time Mechanical HVAC(843) 407-8002

  19. #19 AirPro Comfort Systems, LLC

    Based in Florence, 24 mi away

    36/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.5★ from 14 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.5★ from 14 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    827 W Lucas St, Florence, SC 29501
    View profile for AirPro Comfort Systems, LLC(843) 669-4016

  20. #20 United Refrigeration Inc

    Based in Florence, 23 mi away

    36/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Air conditioning contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 11 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    307 Curry Ln, Florence, SC 29501
    View profile for United Refrigeration Inc(843) 662-1476

  21. #21 R & D Heating & Cooling

    Based in Florence, 21 mi away

    35/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.7★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.7★ from 7 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    4023 W Palmetto St, Florence, SC 29501
    View profile for R & D Heating & Cooling(843) 346-2947

  24. #24 Thermal Air & Electric

    Based in Florence, 20 mi away

    35/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.3★ from 6 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    1913 Deerwood Pl, Florence, SC 29501
    View profile for Thermal Air & Electric(843) 229-9442

Top 26 of 27 HVAC contractors by emergency score

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

HVAC contractors in Lake City, ranks 26 to 26
RankBusinessCR ScoreGoogle ratingDistance
26Aaron's Refrigeration345.0★ (6)24 mi

How we ranked emergency HVAC contractors in Lake City

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 Lake City: questions

Which HVAC contractors in Lake City are open 24/7?

8 on this list post 24/7 hours, including DH Mechanical, Swift Services Heating, Cooling & Electrical, Hill's Heating & Air Conditioning Services, A&A Comfort Solutions LLC and Cayce Company, Inc.

Who is ranked #1 for emergency heating and cooling in Lake City, SC?

DH Mechanical is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Lake City 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 Lake City

  1. October 2026: CR Scores recalculated for 27 hvac contractors serving Lake City.

More emergency and heating and cooling pages