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ContractorsRanked

Best HVAC Contractors in Algonquin, IL (2026)

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

The short answer

  1. 1

    Best overall in Algonquin: Lifeline Plumbing, Heating & Cooling, CR Score 93/100; 4.9★ from 3,222 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): 24HR Home Comfort Services, posts 24/7 hours; ranked #2 of 941.

  3. 11

    Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 22,524 Google reviews at 4.7★, the most of 941 ranked; ranked #11.

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

941 Algonquin HVAC contractors are ranked here by CR Score, from 8 published factors. 431 are open 24/7, 702 open Saturdays and 582 open Sundays, based on posted hours. The median Google rating is 4.9★ across 941 rated businesses.

Top 10 HVAC contractors in Algonquin at a glance

Top 10 HVAC contractors in Algonquin at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Lifeline Plumbing, Heating & Cooling934.9★ (3,222)Elgin, 5 mi away24/7Overall
224HR Home Comfort Services924.9★ (1,374)Lake in the Hills, 2 mi away24/7Emergencies
3Black Diamond Plumbing & Mechanical Inc.924.9★ (6,580)McHenry, 10 mi away24/7—
4G & R Heating and Air914.8★ (2,067)Gilberts, 6 mi away24/7—
5JNL Climate Control, Inc.914.9★ (820)Huntley, 5 mi away24/7—
6Leith Heating and Cooling Inc.915.0★ (784)Elgin, 8 mi away24/7—
7Kustom Heating and Cooling915.0★ (1,021)Elgin, 9 mi away24/7—
8Althoff Home Services914.8★ (1,043)Crystal Lake, 3 mi away24/7—
9Climate Control Services LLC915.0★ (776)Elgin, 9 mi away24/7—
10Legacy Home Services904.9★ (571)Crystal Lake, 4 mi away24/7—

The 941 best HVAC contractors in Algonquin, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  20. #20 Amy Home Services

    Based in Carpentersville, 4 mi away

    89/100CR Score

    Ranked #20 because of its Google rating and availability: 4.8★ from 483 Google reviews, open 24/7.

    • 4.8★ from 483 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    39 N Western Ave, Carpentersville, IL 60110
    View profile for Amy Home Services(847) 239-5771

HVAC contractors ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 941 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Algonquin, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Woodstock Heating, Cooling & Electrical894.9★ (1,222)13 mi
27GSHA Services, LTD894.9★ (747)11 mi
28McNally's Heating and Cooling895.0★ (116)4 mi
29Northern Comfort Heating Air Conditioning Duct Cleaning,Inc894.9★ (240)5 mi
30One Call Heating & Cooling895.0★ (138)5 mi
31Advantage Heating & Cooling894.9★ (351)8 mi
32McNally's Heating and Cooling894.9★ (2,593)18 mi
33Aire Serv of Palatine894.9★ (766)13 mi
34Mr. Heating and Cooling Inc885.0★ (283)11 mi
35Precision Today Plumbing Heating Cooling Electrical884.8★ (7,723)21 mi
36Aaron & Trecker Heating and Air Conditioning885.0★ (320)12 mi
37One Hour Heating & Air Conditioning884.9★ (1,873)18 mi
38Four Seasons Heating, Air Conditioning, Plumbing, & Electric884.8★ (506)9 mi
39Blue Frost Heating & Cooling884.9★ (1,482)17 mi
40Dundee Services Inc885.0★ (85)4 mi
41Algonquin Heating & Air Conditioning884.7★ (143)In Algonquin
42Absolute Comfort884.8★ (250)6 mi
43Indoor Climate Experts HVAC885.0★ (88)5 mi
44Wally's Heating & AC884.9★ (95)4 mi
45AGM Heating & Cooling LLC884.9★ (147)6 mi
46Residential Heating & Cooling884.9★ (905)16 mi
47AA Service Co.884.9★ (3,150)23 mi
48Borter Heating & Air Conditioning Co885.0★ (1,316)21 mi
49Legendary Service Inc.885.0★ (292)13 mi
50Northern Continental Heating & Cooling, Inc.884.8★ (125)3 mi

Also serving Algonquin

20 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 Algonquin
BusinessGoogle ratingDistance
A & J General5.0★ (2)3 mi
Alex’s Duct Cleaning5.0★ (269)5 mi
AM to PM Heating & Cooling5.0★ (2)9 mi
Anthonys Heating & Air3.0★ (2)9 mi
ARS / Rescue Rooter4.7★ (4,969)19 mi
Bill's Heating and Cooling Service5.0★ (2)8 mi
BP HEATING LLC5.0★ (2)10 mi
Conservative Heating & Air Conditioning3.0★ (2)In Algonquin
Countryview heating and cooling5.0★ (2)9 mi
cra-hvacIn Algonquin
ESP TECH heating and cooling5.0★ (1)In Algonquin
F.I.G. MechanicalIn Algonquin
Four Seasons Heating, Air Conditioning, Plumbing, Electric4.7★ (2,787)16 mi
Heating & Air Conditioning3.0★ (2)7 mi
Hoffman Commercial Heating and Cooling5.0★ (2)8 mi
JM Services Heating And Air Conditioning, IncIn Algonquin
Magic HVAC Inc5.0★ (2)4 mi
Nick's Action Air5.0★ (2)3 mi
Superior Test & Balance IncIn Algonquin
Vita HVAC Services5.0★ (2)8 mi

How much do HVAC contractors cost in Algonquin?

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

How much do HVAC contractors cost in Algonquin?
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 Algonquin HVAC contractors

We scored 941 Algonquin HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Algonquin data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

HVAC contractors in Algonquin: frequently asked questions

Who is the best HVAC contractor in Algonquin?

By CR Score, the highest-ranked HVAC contractor in Algonquin, IL is Lifeline Plumbing, Heating & Cooling with a CR Score of 93/100. It has 4.9★ from 3,222 Google reviews. It is open 24/7. 24HR Home Comfort Services (#2) and Black Diamond Plumbing & Mechanical Inc. (#3) follow. We ranked 941 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Algonquin?

ContractorsRanked ranks 941 HVAC contractors serving Algonquin, IL. 3 of them are based in Algonquin; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Algonquin are open 24/7?

431 ranked HVAC contractors in Algonquin post 24/7 hours. The highest-ranked are Lifeline Plumbing, Heating & Cooling (#1), 24HR Home Comfort Services (#2) and Black Diamond Plumbing & Mechanical Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Algonquin work on weekends?

702 of 941 ranked HVAC contractors post Saturday hours and 582 post Sunday hours. The highest-ranked open Saturdays are Lifeline Plumbing, Heating & Cooling (#1), 24HR Home Comfort Services (#2) and Black Diamond Plumbing & Mechanical Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Algonquin?

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 Algonquin. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Algonquin HVAC contractors have?

The median Google rating among 941 rated HVAC contractors in Algonquin is 4.9★, with a median of 22 reviews. ABC Plumbing, Sewer, Heating, Cooling & Electric has the most, 22,524 reviews, and ranks #11. 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 Algonquin?

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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Algonquin

  1. October 2026: CR Scores recalculated for 941 hvac contractors serving Algonquin.
  2. October 2026: 6 duplicate listings merged.

More HVAC contractors and Algonquin pages

Other trades in Algonquin