Heating and Cooling Services
80+ Years' Combined Experience30-Day Labor Warrantyon HVAC ServicesSame-Day Services
Same-Day Services
80+ Years' Combined Experience | 30-Day Labor Warranty on HVAC Services | Same-Day Services
We Are a Full-Service HVAC Company
Is your AC or heating unit malfunctioning at a time when you need it the most? Reach out to the HVAC professionals at Merwin Oil Company. We service most brands and also install units from renown names in the business, like Goodman, Thermopride, Burnham, Sterling, Hot Dawg, and Aprilaire.
We also have spares in stock in case you need a defective part replaced.

Doing Business With Us Gives You Added Value
- Furnace and air conditioning repairs: Our technicians are experienced with all brands of HVAC equipment.
- 2-visit planned service tune-ups: To keep your heating and cooling system running at peak efficiency, we call you twice a year. Learn more.
- FREE estimates: We provide free estimates on new or replacement equipment.
- Financing: We offer financing options. Contact us today to learn more.

Heating and Cooling Links
- Goodman®: Air conditioning and heating
- Aprilaire®: Whole house air cleaners
- Heil®: Heating and cooling products
- Thermopride®: Heating and cooling equipment
- Energy Star: Explanation of tax credits, ways to save on energy and more
- Focus on Energy: Focus on Energy is Wisconsin's renewable resource program

Dangers of Carbon Monoxide
Carbon monoxide is a colorless, odorless, and tasteless gas that poses a significant risk to citizens in their homes.
Common sources of carbon monoxide in homes include:
- Grills
- Furnaces
- Fireplaces
- Water heaters
- Natural gas appliances
- Vehicles idling in the garage
Carbon monoxide concentrations and effects (parts per minute):
- 9 PPM – EPA residential standard – Not to exceed in 8 hours
- 35 PPM – EPA residential standard – Not to exceed in 1 hour
- 50 PPM – OSHA workplace standard – Not to exceed in 8 hours
- 200 PPM – Slight headache, fatigue, dizziness, nausea after several hours
- 400 PPM – Life threatening after 3 hours; frontal headaches after 1 - 2 hours
- 800 PPM – Nausea, dizziness, convulsions within 45 min; unconsciousness and death within 2 - 3 hours
- 1600 PPM – Headache, nausea, dizziness within 20 minutes; death within 1 hour
- 12,800 PPM – Death within 1 - 3 minutes


Call us today for a FREE estimate or consultation.
(920) 929-6100
Our local, family owned company offers a 30 day-labor warranty on all HVAC services as well as manufacturer warranties on all HVAC systems.
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