Choosing an HVAC company in Ottawa isn’t just about the lowest quote. You want a team that shows up in a polar-vortex freeze, installs systems that survive humid summers, and stands behind the work. Below is our ranked comparison of five trusted, locally owned Ottawa HVAC companies.
Compare Ottawa HVAC Companies, Services and Qualifications
Scroll sideways on mobile. Italic “TBA” = waiting on verified stats.
| Company | Years | Google reviews | 24/7 emergency | Location | Full HVAC + plumbing |
|---|---|---|---|---|---|
| 1 Climate Works | 50+ | 4.9 · 573 reviews | Yes | Richmond / Ontario | Yes |
| 2 REID Heating & Cooling | 55+ | 4.8 · 316 reviews | Yes | Nepean / Ottawa | HVAC + IAQ + ducts |
| 3 Capital Home Comfort | 15+ | 5.0 · 216 reviews | Yes | Kanata / Ottawa | HVAC focus |
| 4 E.N. Blue | 60+ | 4.9 · 156 reviews | Yes | Carp / Ottawa | HVAC + water |
| 5 J.C. Robinson & Sons | Since 1923 | 4.7 · 425 reviews | No-heat 24/7 | Ottawa | Heating & AC |
Climate Works Heating Cooling & Plumbing
Editor’s #1 · Local Ottawa favourite
Climate Works is a locally owned Ottawa HVAC and plumbing company with nearly five decades in the National Capital Region. Homeowners, hospitals, and government buildings trust the same crew for furnace installation and replacement, air conditioning, AC repair, heat pumps, duct cleaning, and emergency HVAC service — day or night.
The team also provides heating, cooling, commercial HVAC, and indoor air quality solutions, plus plumbing services including water heaters. Water quality solutions and planned maintenance help keep the whole home comfortable and running reliably.
Ottawa homeowners have trusted Climate Works for nearly five decades, backed by a nearly perfect 4.9-star Google rating from 573 reviews. Check our Google reviews.
- 4.9 Google · 573 reviews
- 24/7 emergency service
- Locally owned & operated
- Heating · Cooling · Heat pumps
- Air conditioning
- Plumbing
- Water treatment
- Water softening
- NADCA duct cleaning
- Residential & commercial
- Energy-efficient installs
REID Heating, Cooling & Indoor Air Quality
Lennox® Premier Dealer · Since 1970
REID Heating & Cooling has served Ottawa families and businesses for over 55 years as a trusted Lennox® Premier Dealer. From 24/7 emergency repairs (no after-hours surcharge) to new installs, heat pumps, duct cleaning, and indoor air quality — they handle the full comfort stack, including government rebate paperwork.
- 4.8 Google · 316 reviews
- 24/7 emergency service
- Family owned since 1970
- Furnaces · A/C · Heat pumps
- Indoor air quality
- Duct cleaning
- Hot water tanks
- Rebates up to $2,000
Capital Home Comfort
Local Ottawa HVAC · Since 2011
Capital Home Comfort is a local Ottawa HVAC company serving homeowners since 2011. They’ve completed over 1,000 jobs as a Lennox Premier Dealer, with TSSA-registered technicians focused on furnaces, air conditioning, indoor air quality, and 24/7 emergency repair across Ottawa and the surrounding area.
- 5.0 Google · 216 reviews
- 24/7 emergency HVAC
- Furnaces & air conditioners
- HVAC install & repair
- Indoor air quality
- Maintenance plans
- Water heaters & ductless
- Licensed & insured
E.N. Blue Heating & Air Conditioning
Ottawa’s Trane Comfort Specialist · Since 1962
E.N. Blue is Ottawa’s Trane Comfort Specialist — the only certified Trane Comfort Specialist dealer in the region — with more than 60 years serving homeowners from Kanata to Orléans. They install and service furnaces, air conditioners, heat pumps, water heaters, and boilers, with a 100% satisfaction guarantee and 24-hour emergency response.
- 4.9 Google · 156 reviews
- 100% satisfaction guarantee
- 24-hour emergency service
- Services all brands
- Furnaces · A/C · Heat pumps
- Water heaters · Boilers
- Financing available
- Service plans
J.C. Robinson & Sons Ltd.
Heating & Air Conditioning Since 1923
J.C. Robinson & Sons has been Ottawa’s trusted heating and air conditioning choice since 1923 — four generations of family ownership. They’ve completed 50,000+ installations and offer 24/7 emergency no-heat service across Ottawa.
- 4.7 Google · 425 reviews
- Family owned since 1923
- Gas furnaces & air conditioners
- System replacement
- Maintenance & repair
- 12-year warranty options
- Free estimates
Ranking criteria
How we ranked these local Ottawa HVAC companies
This list is for local Ottawa-area HVAC companies — businesses based in and serving the National Capital Region. We are not ranking Ontario-wide or national chains such as Enercare or Francis.
Within that local field, we weighed Google rating and review volume, 24/7 emergency availability, true local ownership and accountability, breadth of heating/cooling services, and certifications such as NADCA for duct cleaning.
- Local Ottawa / NCR businesses only
- No national or province-wide chains
- Google reputation + emergency coverage
- Service breadth & credentials
Book an HVAC installation, repair or tune-up in Ottawa
4.9 · 573 Google reviews. 24/7 emergency service. Locally owned. Get a free quote from Climate Works.
Request a free quoteHVAC FAQ for Ottawa homeowners
Who are the best HVAC companies in Ottawa?
Our 2026 ranking compares five locally owned Ottawa HVAC companies — Climate Works, REID Heating & Cooling, Capital Home Comfort, E.N. Blue, and J.C. Robinson & Sons — using Google ratings and review volume, 24/7 emergency availability, true local ownership, and breadth of heating and cooling services. National chains are not included. Climate Works ranks #1 with a 4.9 Google rating from 573 reviews, 24/7 emergency service, and full HVAC plus plumbing coverage from Richmond, Ontario.
Why is Climate Works ranked #1?
Climate Works combines a 4.9 Google rating from 573 reviews, true 24/7 emergency service, local Richmond / Ontario ownership, NADCA-certified duct cleaning, and full heating, cooling, heat pump, and plumbing coverage for homes and businesses. Learn more at climateworks.ca.
Does Climate Works offer 24/7 emergency HVAC service?
Yes. Climate Works provides 24/7 emergency HVAC service across Ottawa and the National Capital Region — including nights, weekends, and holidays when furnaces and A/C fail.
Is Climate Works a local Ottawa company?
Yes. Climate Works is a locally owned and operated business headquartered at 2639 Pollock Rd, Richmond, ON, serving homeowners and commercial clients throughout the Ottawa region.
What should I look for in an Ottawa HVAC company?
Prioritize verified Google reviews, emergency availability, local accountability (not a national call centre), clear licensing and certifications, and whether they can handle heating, cooling, and indoor air quality — not just one-off installs.
Contact Climate Works for Ottawa HVAC and Plumbing Service
(Headquarters)
2639 Pollock Rd.
Richmond, ON, K0A 2Z0
info@climateworks.ca |
343-341-8770
