SD&G Heating and CoolingHVAC contractor in Cornwall, ON
SD&G Heating and Cooling is an HVAC contractor at 17947 Headline Rd, Long Sault, ON K0C 1S0, ranked #3 of 24 HVAC contractors in Cornwall and rated 5.0 from 7 Google reviews. Open 24 hours a day, 7 days a week.
Cornwall, ONUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 17947 Headline Rd, Long Sault, ON K0C 1S0, Cornwall, ONGet directions |
|---|---|
| Phone | (613) 363-6153 |
| Website | sdgheatingcooling.ca |
| Hours | Open 24 hours, 7 days a week |
| Google rating | 5.0 from 7 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Based in Cornwall, 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 |
|---|---|---|---|---|---|---|---|
| SD&G Heating and Cooling (this business) | — | 86 | 5.0 (7) | — | Yes | Yes | |
| Walker ClimateCare | #1 | 96 | 4.8 (1,508) | — | Yes | Yes | 8.0 km |
| Superior Plumbing & Heating of Cornwall | #2 | 87 | 4.3 (74) | — | Yes | Yes | 8.3 km |
| Wylie Mechanical | #4 | 84 | 5.0 (53) | — | Yes | No | 18.9 km |
Questions about SD&G Heating and Cooling
How is SD&G Heating and Cooling ranked in Cornwall?
SD&G Heating and Cooling is ranked #3 of 24 HVAC contractors in Cornwall by CR Score, with 86 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 SD&G Heating and Cooling’s hours?
SD&G Heating and Cooling 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 do Google reviews say about SD&G Heating and Cooling?
SD&G Heating and Cooling has a rating of 5.0 from 7 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 SD&G Heating and Cooling?
Call SD&G Heating and Cooling on (613) 363-6153. The business is at 17947 Headline Rd, Long Sault, ON K0C 1S0, Cornwall, ON. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own SD&G Heating and Cooling? 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.