Harold Heating And Cooling

Harold Heating And Cooling Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Harold Heating And Cooling, Heating, ventilating & air conditioning service, 16700 Sideroad 17A, Sunderland, ON.

Family Owned and Operated for 44 years
Serving York Region, Durham Region and Kawarthas
Residential/Commercial
24HR Emergency Service
Carrier Factory-Authorized Dealer
(705) 357-2010
16700 Side Rd 17A
Sunderland, ON
www.haroldheating.ca

09/03/2026

Two jobs, one system.

An IBC Combination Boiler provides both home heating and domestic hot water from one compact unit. It’s an efficient way to keep your home comfortable while getting the hot water you need without a separate water heater.

Thinking about upgrading your home heating system? Our team can help you find the right option for your home.

📞 (705) 357-2010
🌐 haroldheating.ca

09/02/2026

Are you ready? Let’s go. 🔥

Just unloaded our Carrier fall furnace + heat pump stocking order. Warehouse is stacked, the crew is moving, and we’re ready for heating season.
Proud Carrier dealer for almost 40 years. Family-owned since 1982. Same shop, same standard — committed to quality.

If you Need a furnace, heat pump, or ductless this fall? We’ve got the stock and the team. Ask us about Ontario heat pump rebates too.

705-357-2010
Harold Heating & Cooling

08/26/2026

A day in the life of an HVAC tech. 🔧🔥

No two days look quite the same. From heading out to service calls and troubleshooting systems to repairs, maintenance and making sure everything is running the way it should, there’s always something to get done.

Come along for a day on the job with the Harold Heating & Cooling team!

📞 (705) 357-2010
🌐 haroldheating.ca

08/25/2026

This is where it all starts. 🔥

Our team takes sheet metal and transforms it into custom ductwork, measuring, cutting and forming each piece specifically for the job.

It’s the kind of work that happens behind the scenes, but makes all the difference once everything comes together.

📞 (705) 357-2010
🌐 haroldheating.ca

08/14/2026

What Your HVAC System Can Tell You Before It Breaks Down

Most HVAC systems do not fail without warning. In many cases, they begin showing subtle signs that something is changing long before a complete breakdown occurs.

Knowing what to watch for can help you avoid emergency repairs, unexpected costs, and uncomfortable days without heating or cooling.

Common warning signs include:
🔥 New or unusual noises during operation
🔥 Weak airflow from vents
🔥 Longer run times than normal
🔥 Frequent cycling on and off
🔥 Higher energy bills without increased usage

These changes often indicate that your system is working harder than it should. While they may seem minor at first, they can quickly lead to reduced efficiency and additional wear on important components if left unaddressed.

Paying attention to these early warning signs gives you the opportunity to schedule maintenance on your schedule instead of waiting for an emergency repair.

To schedule your HVAC inspection:
➡️ (705) 357-2010
🌐 haroldheating.ca

Thank you so much for taking the time to leave such a kind review! We truly appreciate hearing about your experience and...
08/14/2026

Thank you so much for taking the time to leave such a kind review! We truly appreciate hearing about your experience and knowing that our team was able to provide the service you deserve.

Your kind words and continued support mean so much to our entire team. Thank you for choosing Harold Heating and for trusting us with your home’s comfort❤️

📞 (705) 357-2010
🌐 haroldheating.ca

Your air conditioner works hard enough during the summer. ☀️❄️A few everyday habits could be making it work even harder ...
08/04/2026

Your air conditioner works hard enough during the summer. ☀️❄️

A few everyday habits could be making it work even harder without you realizing it. From dirty filters to blocked outdoor units, avoiding these common mistakes can help improve efficiency and keep your home comfortable all season long.

A little prevention now can go a long way. 👍

📞 (705) 357-2010
🌐 haroldheating.ca

Looking for an easy way to keep your home cooler this summer?Keeping your curtains closed during the hottest part of the...
08/03/2026

Looking for an easy way to keep your home cooler this summer?

Keeping your curtains closed during the hottest part of the day can help reduce heat from the sun, giving your air conditioner a helping hand and improving your home's comfort.

Swipe through for a few simple tips that can make a big difference.

📞 (705) 357-2010
🌐 haroldheating.ca

Another happy client! 💙We’re always grateful for the kind words. At Harold Heating and Cooling, we take pride in deliver...
07/28/2026

Another happy client! 💙

We’re always grateful for the kind words. At Harold Heating and Cooling, we take pride in delivering reliable service, quality workmanship, and comfort you can count on.

Your feedback means a lot to us and helps us continue providing the high level of service our community deserves.

Address

16700 Sideroad 17A
Sunderland, ON
L0C1H0

Telephone

+17053572010

Website

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