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24 Hour Emergency Heating Service

905-852-5726

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Maintenance & System Protection

At Therwood, we believe the best repair is the one you never have to make. For over 30 years, we’ve been helping our neighbours in Uxbridge, Port Perry, and Stouffville extend the life of their equipment through professional, thorough annual servicing.

Furnace Cleaning & Annual Maintenance

Keeping Your Home Efficient & Reliable

One of the most important things you can do for your home is to arrange for an annual furnace cleaning. A dirty furnace is an inefficient furnace, neglecting it can lead to higher energy bills and stressful, unexpected breakdowns just as the temperature drops. Our licensed technicians perform a comprehensive check-up to find and prevent potential problems before they start.

Protecting Your Warranty & Insurance

Professional annual servicing is a critical requirement to keep your manufacturer's warranty valid. Furthermore, many insurance companies require proof of professional maintenance to maintain your home coverage. By scheduling your annual visit, you ensure your home stays at optimum efficiency while meeting these essential professional requirements.

Did you know? It is an Ontario Gas and Oil Code requirement to have an annual furnace maintenance performed.

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Air Conditioning Tune-Ups

To keep your unit running efficiently and without problems, an annual spring check-up is essential.

While changing your filters regularly is a great start, our professional annual servicing catches potential issues before they lead to mid-summer downtime.We’ll ensure your system is clean, your filters are fresh, and your AC is calibrated to handle the hottest Ontario days. Don't wait for a heatwave to find out your system needs attention, book your tune-up early!

Commercial Maintenance Plans

We understand that your business’s comfort is your customers' comfort.

Therwood offers comprehensive commercial maintenance contracts designed to suit your specific business needs. Whether you require quarterly, semi-annual, or annual visits, we provide personalized service to keep your commercial HVAC systems running reliably.

Contact us today for a personalized quote tailored to your business.

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Frequently Asked Questions

Annually. Having an annual service will ensure that your equipment is safe and efficient.

Think of HVAC maintenance like an oil change for your car. Even if it’s running, a professional tune-up ensures your system stays safe, maintains its manufacturer warranty, and operates at peak efficiency. Small adjustments now prevent expensive emergency repairs during a heatwave or a cold snap.

Our licensed technicians perform a comprehensive multi-point inspection tailored to your specific equipment. Here is what we focus on:

Furnace Maintenance:

Air Conditioner Maintenance:

For most residential systems, we recommend changing your filter every 3 months. However, if you have pets, allergies, or a high-occupancy home, checking them monthly is a good habit. A clean filter is the easiest way to prevent your equipment from overheating and shutting down.

Yes. A neglected system has to work harder and run longer to reach the same temperature. By ensuring your motors are lubricated and your coils are debris-free, your system draws less power (hydro) and uses less fuel (gas/propane), putting money back in your pocket every month.

A thorough residential maintenance visit usually takes between 60 and 90 minutes. We take the time to do it right, rather than just rushing through a checklist, so you can have total peace of mind for the season ahead.

Ready for some peace of mind? 

Don't wait for a breakdown to give us a call. Join the hundreds of local families and businesses that trust Therwood for their annual safety and efficiency checks. 

Book Your Maintenance Today