The furnace stopped and the house is getting cold. What do you do first?

If you smell gas or a carbon monoxide alarm is sounding, leave the house now and call your gas utility or 911 from outside. If the air is clear, let the taps drip and open the cabinet doors under sinks on outer walls. The steps come from the National Weather Service, the CPSC, and MidAmerican Energy.

  • Asking for a call does not hire anyone
  • Pipe and gas steps from public safety pages
  • The call comes from a private company
A dark house standing in deep snow, with a person in a red jacket walking away from the camera.

Ask for a call. Hiring comes after you talk.

The furnace is not heating. Say where the house is, and ask for a call.

If you smell gas or a carbon monoxide alarm is sounding, leave the house and call your gas utility or 911 from outside. Asking for a call does not hire a company or set a price.

Start here if the heat has stopped

The furnace is quiet, the vents are cold, the pipes are a worry, or the unit is old enough that replacement is on the table. A call with a heating company comes after the safety steps.

A white digital thermostat mounted on a pale interior wall.
  • The furnace will not start

    The thermostat is calling for heat and the furnace stays quiet. Leave the house first if you smell gas or a carbon monoxide alarm is sounding.

  • The furnace runs and the vents blow cold

    The blower can move air that is not warm. That is a repair question for a heating company, after you are sure the air in the house is safe.

  • You are worried about the pipes

    The National Weather Service says to drip hot and cold water and to open sink cabinets on outer walls. The 55 degree setting on that sheet assumes the heat still runs.

  • An older furnace needs a decision

    ENERGY STAR says to consider replacing a furnace older than 15 years. That is guidance. A written repair price still belongs in the decision.

What you can do, what a company does, and what the utility does

Three different jobs get mixed together when the house is cold. Only one of them is a repair visit.

What you can do

What it is
Leave if you smell gas or a CO alarm sounds. If the heat is out and you do not smell gas, drip the taps, open sink cabinets on outer walls, and find the water shutoff.
What it costs to start
If a pipe is frozen, that sheet says to use a hair dryer.
Worth knowing
Do not thaw a pipe with a flame. Do not heat the house with a gas oven or a generator indoors.
Read the first-hour guide

A heating company

What it is
A company can diagnose the furnace, tell you the part that failed, and give you a price to repair or replace it.
What it costs to start
HomeAdvisor, updated June 20, 2026, puts the average furnace repair at $318, with a normal range of $133 to $505. That is national, not a bid.
Worth knowing
Asking for a call through this site does not hire them. Any price is between you and that company.
How to judge a company

Your gas utility

What it is
The utility can answer a gas leak, and some of them pay a rebate after a new furnace is installed. They are not the same job as a repair company.
What it costs to start
Rebate amounts differ. AFUE, annual fuel utilization efficiency, is the rating utilities use for furnace rebates. ComfortSystems lists $200 for a 90% AFUE furnace. In Iowa, MidAmerican lists a rate per 1,000 Btu per hour for its own customers, not a flat check.
Worth knowing
ComfortSystems says it does not install furnaces. Call the utility's own leak number for a gas smell, not a repair ad.
Which rebates are still open

What happens after you ask for a call

  1. Send the short form

    Your name, phone, email, state, and city. It goes to one or more heating companies that serve your area, not to your city or your gas utility.

  2. A company may call you

    Cold House Fix and one or more heating companies that serve your area may call and text you at the number you entered.

  3. You choose

    If the plan and the price sound right, you can hire that company. If they do not, you can tell them no.

Have these nearby when the company calls

You do not need any of this to ask for a call. Having it close makes the first conversation more useful.

  • Whether you smelled gas, and whether a carbon monoxide alarm sounded
  • What the furnace is doing: silent, running with cold air, or starting and stopping
  • The make and model, if you can read them without moving a panel
  • About how old the furnace is, even if that is only a guess
A person in a blue jacket and cap kneeling beside an outdoor air-conditioning cabinet.

Questions people ask before they call

Ask for a call
Is Cold House Fix a city utility or a fire department?

No. We are an independent guide. The companies that may call you are private heating companies. They are not your gas utility and they are not 911.

Does it cost anything to ask for a call?

Sending the form does not hire anyone, and this site does not put a price on that form. If you hire a company, its price is between you and that company.

Can someone promise the house will be warm by a certain hour?

No one on this site can promise a clock time or a repair price. Ask the company that calls for its own time and a written price.

What happens after I send the form?

Cold House Fix and one or more heating companies that serve your area may call and text you at the number you entered, as the consent box explains. You can tell them to stop.

Do you need my utility account number?

No. The form does not ask for it. Do not type an account number into any field on this site.

Talk to someone about the furnace

Asking for a call does not hire a company, and you decide what happens after you talk.

Ask for a call