Dunn Heating and Air ConditioningHVAC contractor in Waterloo, ON
Dunn Heating and Air Conditioning is an HVAC contractor at 75 Rankin St, Waterloo, ON N2V 2B5, ranked #9 of 249 HVAC contractors in Waterloo and rated 4.7 from 969 Google reviews. Open 24 hours a day, 7 days a week.
Waterloo, ONUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 75 Rankin St, Waterloo, ON N2V 2B5Get directions |
|---|---|
| Phone | (226) 770-5265 |
| Website | dunnheating.com |
| Hours | Open 24 hours, 7 days a week |
| Google rating | 4.7 from 969 Google reviews |
Service area
Serves Waterloo and 6 towns within 40 km: Kitchener, New Hamburg, Guelph, Cambridge, Paris and Stratford.
Based in Waterloo, ONView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
- Open 24/7
- Open evenings — no
- Open Saturdays
- Open Sundays
- Emergency service
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | CA$5,460 | CA$8,400 | CA$11,350 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | CA$3,970 | CA$6,770 | CA$9,690 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Compare nearby HVAC contractors
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| Dunn Heating and Air Conditioning (this business) | — | 91 | 4.7 (969) | — | Yes | Yes | |
| LG Home Comfort KWC | #7 | 92 | 4.9 (674) | — | Yes | Yes | 10.7 km |
| Advance Heating & Cooling KW | #8 | 91 | 5.0 (451) | — | Yes | Yes | 13.0 km |
| Reliance Heating, Air Conditioning & Plumbing | #10 | 91 | 4.7 (9,230) | — | Yes | Yes | 22.4 km |
Questions about Dunn Heating and Air Conditioning
How is Dunn Heating and Air Conditioning ranked in Waterloo?
Dunn Heating and Air Conditioning is ranked #9 of 249 HVAC contractors in Waterloo by CR Score, with 91 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity and profile completeness. No business can pay to change its rank.
What are Dunn Heating and Air Conditioning’s hours?
Dunn Heating and Air Conditioning is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.
What areas does Dunn Heating and Air Conditioning serve?
Serves Waterloo and 6 towns within 40 km: Kitchener, New Hamburg, Guelph, Cambridge, Paris and Stratford. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.
What do Google reviews say about Dunn Heating and Air Conditioning?
Dunn Heating and Air Conditioning has a rating of 4.7 from 969 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact Dunn Heating and Air Conditioning?
Call Dunn Heating and Air Conditioning on (226) 770-5265. The business is at 75 Rankin St, Waterloo, ON N2V 2B5. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own Dunn Heating and Air Conditioning? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.