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Best HVAC Contractors in Charleston, IL (2026)

29 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Charleston: Mattex Heating, Cooling, Plumbing, Drain and Electrical, CR Score 65/100; 4.9★ from 318 Google reviews; open 24/7.

  2. 3

    Best for emergencies (open 24/7): All Pro Heating AC Plumbing, LLC, posts 24/7 hours; ranked #3 of 29.

  3. 2

    Most-reviewed: LD Mechanical Contractors Inc, 236 Google reviews at 4.7★, the most of 29 ranked after Mattex Heating, Cooling, Plumbing, Drain and Electrical; ranked #2.

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

29 Charleston HVAC contractors are ranked here by CR Score, from ten published factors. 9 are open 24/7, 11 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.5★ across 29 rated businesses.

Top 10 HVAC contractors in Charleston at a glance

Top 10 HVAC contractors in Charleston at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Mattex Heating, Cooling, Plumbing, Drain and Electrical654.9★ (318)Mattoon, 11 mi away24/7Overall
2LD Mechanical Contractors Inc614.7★ (236)Charleston—Most reviews
3All Pro Heating AC Plumbing, LLC604.8★ (119)Douglas, 21 mi away24/7Emergencies
4Duct Busters- free service calls-free estimate. We install AC and furnaces594.3★ (54)Mattoon, 10 mi away24/7—
5Bosler's Heating and Air554.8★ (18)Charleston——
6Paradise Heating & Air Conditioning554.6★ (85)Mattoon, 11 mi away——
7Accu-Aire Heating & Air Conditioning554.8★ (19)Douglas, 22 mi away24/7—
8Rardin Plumbing Heating & AC553.4★ (16)Mattoon, 12 mi away24/7—
9ENTEC Services, Inc.544.0★ (4)Mattoon, 9 mi away24/7—
10Poteete Heating & Air Conditioning544.6★ (14)Charleston——

The 29 best HVAC contractors in Charleston, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

  2. #2 LD Mechanical Contractors Inc

    Based in Charleston

    61/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.7★ from 236 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.7★ from 236 Google reviews
    Hours
    Mon–Fri 7 AM–4 PM · Sat–Sun closed
    Address
    4721 N County Rd 2200 E, Charleston, IL 61920
    View profile for LD Mechanical Contractors Inc(217) 345-9633

  4. #4 Duct Busters- free service calls-free estimate. We install AC and furnaces

    Based in Mattoon, 10 mi away

    59/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.3★ from 54 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.3★ from 54 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    812 S 6th St, Mattoon, IL 61938
    View profile for Duct Busters- free service calls-free estimate. We install AC and furnaces(217) 460-1089

  5. #5 Bosler's Heating and Air

    Based in Charleston

    55/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.8★ from 18 Google reviews
    Hours
    Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
    Address
    208 N 7th St, Charleston, IL 61920
    View profile for Bosler's Heating and Air(217) 549-7425

  8. #8 Rardin Plumbing Heating & AC

    Based in Mattoon, 12 mi away

    55/100CR Score

    Ranked #8 because of its Google rating and trade focus: 3.4★ from 16 Google reviews, listed on Google as “Heating contractor”.

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

    • 3.4★ from 16 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3304 Marshall Ave Unit B, Mattoon, IL 61938
    View profile for Rardin Plumbing Heating & AC(217) 234-9000

  9. #9 ENTEC Services, Inc.

    Based in Mattoon, 9 mi away

    54/100CR Score

    Ranked #9 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
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1017 Remington Rd, Mattoon, IL 61938
    View profile for ENTEC Services, Inc.(217) 961-0662

  10. #10 Poteete Heating & Air Conditioning

    Based in Charleston

    54/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.6★ from 14 Google reviews
    Hours
    Mon–Tue 8:30 AM–4 PM · Wed 8:30 AM–3 PM · Thu–Fri 8:30 AM–4 PM · Sat–Sun closed
    Address
    731 12th St, Charleston, IL 61920
    View profile for Poteete Heating & Air Conditioning(217) 345-2784

  12. #12 C R Neff Plumbing & Heating

    Based in Mattoon, 11 mi away

    53/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.0★ from 22 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 4.0★ from 22 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat closed · Sun 7 AM–8 PM
    Address
    1805 Lafayette Ave, Mattoon, IL 61938
    View profile for C R Neff Plumbing & Heating(217) 235-0882

  13. #13 Indiana Installers, LLC

    Based in Lafayette, 17 mi away

    53/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 5 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Indiana Installers, LLC(574) 721-2489

  14. #14 S & S Heating LLC

    Based in Douglas, 18 mi away

    52/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.5★ from 23 Google reviews, listed on Google as “Heating contractor”.

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

    • 4.5★ from 23 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 8 AM–3 PM · Sun closed
    Address
    359 N CR 475 E, 341N N County Rd 475 E, Arthur, IL 61911
    View profile for S & S Heating LLC(217) 268-4569

  15. #15 Shepard & Shepard Mechanical Inc

    Based in Mattoon, 12 mi away

    51/100CR Score

    Ranked #15 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 3.7★ from 3 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat 7 AM–9 PM · Sun 7 AM–8 PM
    Address
    4112 Lake Land Blvd, Mattoon, IL 61938
    View profile for Shepard & Shepard Mechanical Inc(217) 234-8336

  16. #16 Air Jordon HVAC

    Based in Douglas, 17 mi away

    51/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.6★ from 28 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 4.6★ from 28 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    10 W Main St, Casey, IL 62420
    View profile for Air Jordon HVAC(217) 932-3365

  17. #17 A-1 Heating and Air

    Based in Douglas, 17 mi away

    51/100CR Score

    Ranked #17 because of its Google rating and trade focus: 1.0★ from 5 Google reviews, listed on Google as “HVAC contractor”.

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

    • 1.0★ from 5 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for A-1 Heating and Air(217) 213-9256

  18. #18 Shepard & Shepard

    Based in Mattoon, 12 mi away

    49/100CR Score

    Ranked #18 because of its Google rating and trade focus: 3.3★ from 9 Google reviews, listed on Google as “Heating contractor”.

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

    • 3.3★ from 9 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    3316 Marshall Ave, Mattoon, IL 61938
    View profile for Shepard & Shepard(217) 234-8336

  23. #23 Legacy Heating and Air

    Based in Mattoon, 10 mi away

    48/100CR Score

    Ranked #23 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 2.3★ from 3 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    516 Dewitt Ave #2, Mattoon, IL 61938
    View profile for Legacy Heating and Air(217) 317-1209

All 29 HVAC contractors

#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile.

HVAC contractors in Charleston, ranks 26 to 29
RankBusinessCR ScoreGoogle ratingDistance
26Rhode Heating and Air Conditioning454.7★ (3)24 mi
27Cooleys Plumbing and Heating451.8★ (5)8 mi
28Industrial Services of Illinois Inc434.6★ (5)11 mi
29Booker Brothers Plumbing, Heating & Electrical LLC423.4★ (5)24 mi

Also serving Charleston

14 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Charleston
BusinessGoogle ratingDistance
A & M Mechanical of Charleston, LLC5.0★ (1)In Charleston
Custom Metal Services11 mi
Eaton Plumbing & Heating8 mi
Genesis Electric & HVAC5.0★ (1)17 mi
GoElectrified13 mi
Greenleaf HVAC, Inc.5.0★ (2)17 mi
H & w Plumbing Htg & AC1.0★ (1)In Charleston
HomeworX Maintenance8 mi
Industrial Facilities Engineering Services17 mi
Mattoon Air Duct Services3.0★ (2)15 mi
Redstar Plumbing & Hvac INC.5.0★ (1)17 mi
Simpson's Heating & Air, IncIn Charleston
Sudkamp Plumbing Heating & Electric20 mi
T & C Heating & Air5.0★ (1)In Charleston

How much do HVAC contractors cost in Charleston?

National price ranges in USD, not adjusted for Charleston. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Charleston?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

When to hire an HVAC contractor in Illinois

In Illinois, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Charleston HVAC contractors

We scored 29 Charleston HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

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 fromIn Charleston data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

HVAC contractors in Charleston: frequently asked questions

Who is the best HVAC contractor in Charleston?

By CR Score, the highest-ranked HVAC contractor in Charleston, IL is Mattex Heating, Cooling, Plumbing, Drain and Electrical with a CR Score of 65/100. It has 4.9★ from 318 Google reviews. It is open 24/7. LD Mechanical Contractors Inc (#2) and All Pro Heating AC Plumbing, LLC (#3) follow. We ranked 29 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Charleston?

ContractorsRanked ranks 29 HVAC contractors serving Charleston, IL. 4 of them are based in Charleston; the rest serve it from nearby towns. Another 14 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Charleston are open 24/7?

9 ranked HVAC contractors in Charleston post 24/7 hours. The highest-ranked are Mattex Heating, Cooling, Plumbing, Drain and Electrical (#1), All Pro Heating AC Plumbing, LLC (#3) and Duct Busters- free service calls-free estimate. We install AC and furnaces (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Charleston work on weekends?

11 of 29 ranked HVAC contractors post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Mattex Heating, Cooling, Plumbing, Drain and Electrical (#1), All Pro Heating AC Plumbing, LLC (#3) and Duct Busters- free service calls-free estimate. We install AC and furnaces (#4). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Charleston?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Charleston. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Charleston HVAC contractors have?

The median Google rating among 29 rated HVAC contractors in Charleston is 4.5★, with a median of 14 reviews. Mattex Heating, Cooling, Plumbing, Drain and Electrical has the most, 318 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Charleston?

In Illinois, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How does ContractorsRanked rank HVAC contractors?

Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Charleston

  1. October 2026: CR Scores recalculated for 29 hvac contractors serving Charleston.

More HVAC contractors and Charleston pages