Gravity Furnace - Minneapolis, St Paul, MN
Octopus Furnace (Gravity Feed) Replacement & Removal
There are numerous reasons to replace your gravity furnace:
- Save money on monthly fuel costs. All existing gravity furnaces operate at less than 50% efficiency, sending your hard-earned dollars right up the chimney.
- Most of these out-of-date units contain unsafe fire retardants. All gravity furnaces contain asbestos. Removing these potentially hazardous materials from your home will contribute to a healthier environment for you and your family.
- It is impossible to have whole-house central air conditioning installed on your old gravity furnace.
- You cannot filter or humidify air with a gravity furnace.
- Removal of a gravity furnace substantially increases usable square footage in your home.
- Updating to modern heating and cooling equipment increases the value and salability of your home.
Residential Heating and Air has replaced over 1,000 gravity furnaces in the last 17 years. We have the skills and experience to make your retrofit seamless, any time of year.
Contact us now for a free, no-obligation estimate.
Frequently Asked Questions
- What happens to my old gravity furnace?
- Do you have to cut holes in my floors?
- Do I need to pull a permit?
- How long does a gravity change-out take?
- How long will I be without heat?
- Can I install a high-efficiency furnace in my 80-100 year old home?
- Are the new furnaces noisy?
- What does a typical job like this cost?
- Do you offer financing?
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What happens to my old gravity furnace?
First, a licensed abatement contractor selected by Residential Heating & Air Conditioning seals off the entire work area. He removes asbestos or any hazardous materials. Then the old furnace and 100% of the existing ductwork are removed. The whole basement is cleaned professionally. The air quality is tested after the project is complete, per state regulation. Now your home is ready for a new, modern furnace and ductwork.
Do you have to cut holes in my floors?
It is rare that a hole must be cut. However, our comfort advisor may recommend a floor register be added to a cold spot in your home. Our technicians will discuss decisions like these with you before taking action.
Do I need to pull a permit?
Residential Heating & Air Conditioning is licensed, bonded and insured, and provides mechanical permits on all of its installations. The work is inspected by city inspectors when the job is complete. This gives you confidence that the job was done correctly and safely.
How long does a gravity change-out take?
The average installation takes no more than a week from start to finish.
How long will I be without heat?
At most, you will be without heat for 6-8 hours. Even in 20-below weather, the average home only loses 1 degree per hour without a furnace running. This affords ample time year round to perform these installations.
Can I install a high-efficiency furnace in my 80-100 year old home?
Yes. The older the home, the greater the urgency to upgrade your heating system.
Are the new furnaces noisy?
No. We install the quietest furnaces on the market, and your new ductwork is designed with noise reduction in mind.
What does a typical job like this cost?
There are many variables that affect the cost of an installation: size of home, age of home, equipment selection, accessory items (air filter, humidifier), location of furnace, heat loss and heat gain of home, existing electrical service in home, and gas service to home.
As you can see with so many issues, it is important for a free in-house consultation with no obligation.
Do you offer financing?
Yes. In addition to accepting Visa and Master Card, we also offer financing with no payments for up to18 months.


