Grantier Oil specializes in the comfort industry!


We install furnaces, boilers, hot water heaters, stoves, air conditioning units, and AC Mini Splits.

We are the one-stop-shop for all of your heating and cooling needs!

We encourage our customers to buy the best for their heating and cooling needs. For warm-air furnaces we stand with Thermopride. The longevity and warranties make it clear why other generic brands just aren’t worth it. You’re buying and investing in peace of mind that your heating and cooling products will be efficient, reliable, and of good quality!

Cleaning and Preventative Maintenance

Regular HVAC maintenance is the best way to ensure peak performance. We inspect all parts of the system; change filters, listen for abnormal noises, and vacuum out the system so that your appliances are running at peak efficiency when tried by colder temperatures.

Emergency Service

Should you require emergency service, our team is always available to get you back up and running. Our team of technicians is knowledgeable and reliable with many decades of experience and available 24/7!

Useful Links

The following are handy links & resources useful to homeowners: