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Emergency HVAC Contractors in Ottawa, IL (2026)

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

10 of the 30 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 Ottawa: Lanphierd Heating and Cooling, 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 Ottawa at a glance

Top emergency HVAC contractors in Ottawa at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Lanphierd Heating and Cooling645.0★ (70)Ottawa24/7
2Triple Service Inc.624.8★ (699)Mendota, 20 mi away24/7
3Hometown Heating & Cooling Co624.8★ (34)Ottawa24/7
4Starved Rock Heating & Cooling604.5★ (15)Ottawa24/7
5Advanced Heating & Air Of Illinois, Inc.605.0★ (10)Ottawa24/7
6EZ-Air Heating & Cooling605.0★ (230)Morris, 23 mi away24/7
7John's Service and Sales, Inc.604.5★ (82)Peru, 12 mi away24/7
8One Stop Heating & Cooling575.0★ (31)Mendota, 21 mi away24/7
9A&G Heating and Air Conditioning, LLC " Gas fireplace services"575.0★ (16)Peru, 17 mi away24/7
10Correa Heating & Air Conditioning565.0★ (20)Mendota, 21 mi away24/7

Call an emergency HVAC contractor in Ottawa 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 30 emergency HVAC contractors in Ottawa, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights.

  2. #2 Triple Service Inc.

    Based in Mendota, 20 mi away

    62/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.8★ from 699 Google reviews, listed on Google as “Furnace repair service”.

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

    • 4.8★ from 699 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    801 Monroe St, Mendota, IL 61342
    View profile for Triple Service Inc.(815) 857-8457

  6. #6 EZ-Air Heating & Cooling

    Based in Morris, 23 mi away

    60/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 230 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 230 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1225 Cemetery Rd, Morris, IL 60450
    View profile for EZ-Air Heating & Cooling(815) 942-2665

  14. #14 Huber Plumbing & Heating

    Based in Sandwich, 21 mi away

    44/100CR Score

    Ranked #14 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Heating contractor”.

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

    • 5.0★ from 7 Google reviews
    Address
    430 S Depot St, Somonauk, IL 60552
    View profile for Huber Plumbing & Heating(815) 498-2860

  20. #20 Chapman's Mechanical Systems

    Based in Peru, 16 mi away

    40/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.8★ from 38 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    4140 Ed Urban Dr, Peru, IL 61354
    View profile for Chapman's Mechanical Systems(815) 223-1379

  21. #21 Diversified Sheet Metal INC

    Based in Streator, 15 mi away

    37/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.6★ from 9 Google reviews
    Hours
    Mon–Fri 7 AM–4:30 PM · Sat–Sun closed
    Address
    402 N Illinois St, Streator, IL 61364
    View profile for Diversified Sheet Metal INC(815) 672-2990

  25. #25 ARGENT HVAC LLC

    Based in Plano, 15 mi away

    36/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Heating contractor”.

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

    • 4.0★ from 4 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    View profile for ARGENT HVAC LLC(815) 786-1419

All 30 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #30, in CR Score order; each links to its profile.

HVAC contractors in Ottawa, ranks 26 to 30
RankBusinessCR ScoreGoogle ratingDistance
26Family Repair Service LLC364.5★ (8)22 mi
27Thatcher Mechanical Heating and Air Conditioning354.3★ (15)25 mi
28Metcalf Martin Plumbing-Heating Inc344.2★ (26)16 mi
29Barry Plumbing & Heating Inc324.6★ (11)23 mi
30Transco Products Inc.294.3★ (3)17 mi

How we ranked emergency HVAC contractors in Ottawa

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 Ottawa: questions

Which HVAC contractors in Ottawa are open 24/7?

10 on this list post 24/7 hours, including Lanphierd Heating and Cooling, Triple Service Inc., Hometown Heating & Cooling Co, Starved Rock Heating & Cooling and Advanced Heating & Air Of Illinois, Inc..

Who is ranked #1 for emergency heating and cooling in Ottawa, IL?

Lanphierd Heating and Cooling is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Ottawa 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 Ottawa

  1. October 2026: CR Scores recalculated for 30 hvac contractors serving Ottawa.

More emergency and heating and cooling pages