Hours: We are open 24/7

333 E Judd Street, Woodstock, IL 60098

(815) 338-0282

Financing Available


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At Woodstock Heating & Cooling, we entirely understand how essential it is to find the perfect heating system for your home in Woodstock, IL; Crystal Lake, IL; Huntley, IL; McHenry, IL; Lake in the Hills, IL; Cary, IL; Algonquin, IL; Bull Valley, IL; and Village of Lakewood, IL. As a reputable HVAC contractor that has been serving the community for over 100 years, we take pride in offering our clients the most effective HVAC solutions and services that meet your specific needs.

Considering Making the Switch to Natural Gas?

If you are utilizing an oil-based heating system in your residence, it might be a good idea to consider going for an oil-to-gas conversion. You’ll find that natural gas is far more affordable than oil and also it is a cleaner burning fuel which is much better for the environment. With a heating system that runs on natural gas, the system will work more efficiently and effectively for a more comfortable environment with reduced energy expenses.

Call on Woodstock Heating & Cooling for Oil-to-Gas Conversions

Our NATE-certified professionals are highly trained and experienced in oil-to-gas conversions. We use advanced equipment and industry-grade tools to ensure you experience a seamless and safe transition. The process involves assessing your heating equipment to see that it can be converted, installing gas lines and meters, and potentially having a gas line installed by your natural gas provider to deliver natural gas to your home. We also safely decommission or remove old oil tanks according to local codes and regulations. If you’re considering making the change from oil to natural gas, give us a call today at (815) 338-0282 for a free consultation!


We’re Celebrating 100+ Years of Service to the Community
We have had the pleasure of serving McHenry County and the surrounding areas since 1917.


A Full Line of Equipment
With our warehouse fully stocked, we can offer you many different options depending on what you’re looking for.


We’re Passionate About Our Work & Improving Every Day
Woodstock Heating & Cooling currently has a 98% customer approval rating.

Gas Heating & Oil to Gas Conversion Woodstock, IL, Crystal Lake, IL, Huntley, IL, McHenry, IL, Lake in the Hills, IL & Cary, IL

Light Commercial HVAC Services in Woodstock, IL | Oil to Gas Conversion Crystal Lake, IL

Light Commercial HVAC ServicesResidential HVAC Services ∴ McHenry, IL ∴ Huntley, IL ∴ Lake in the Hills, IL

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Customer Reviews
What our customers are saying

Justin was excellent! He was professional, explained things so we could understand, he was thorough and did an excellent job on our preventative maintenance check for our heating systems. He is also very personable, honest and we are very pleased with his service!


I have always been impressed by the prompt response and excellent service provided by Woodstock Heating & Cooling. Justin was here today for a service check on my furnace and he was extremely professional, informative and skilled…not surprising, because this is the company norm. Thank you.


Excellent experience. I had a humidifier, media cabinet, whole house dehumidifier and thermostat installed. Great experience from initial consultation with Thomas through quote and install with Witt. Witt did an excellent job- clean, efficient and took the time to explain everything to me. I would highly recommend Woodstock Heating and Cooling


Whit and KC were on time and completed the job well within the estimated time window. Great service, and I’ll call Woodstock Heating and Cooling again for future work on my HVAC.


Just so wonderful to work with a quality locally owned and operated company.


Woodstock Heating and Cooling did a great job with both our furnace and A/C. When we have had any trouble, they respond very quickly. Their people are professional, caring and ready to go the extra mile to do what it takes to repair equipment. A big thank you in particular to Joe and Greg who were here last week to help with an issue caused by a mouse. We cannot say enough positive things about Woodstock Heating and Cooling! They have our loyalty!


responded to request for repair work on heating system quickly and the workmanship was excellent; along with reasonable cost. Woodstock Heating is a quality business; the Best!

At Woodstock Heating & Cooling,

We’ll treat you like family.

Our Story

Residential HVAC Services

Light Commercial HVAC Services

Bull Valley, IL

McHenry, IL

Algonquin, IL

Cary, IL

Woodstock, IL

Village of Lakewood, IL

Lake in the Hills, IL

Huntley, IL

Crystal Lake, IL