Gas Appliance BTU Load Calculator

Use this free calculator to total the input ratings of existing and planned gas appliances. It creates a simple connected-load summary you can copy or share with an HVAC contractor, plumber, generator installer, fireplace dealer, appliance installer, or gas piping professional.

This is not a gas pipe sizing calculator. The result does not confirm that an existing meter, regulator, service, or gas line can support the load. Use the BTU ratings from the equipment nameplate or manufacturer documentation whenever possible.

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For planned and non-emergency gas line work. There's no charge to send a request.

Total Existing + Planned Gas Load

Add each gas appliance and enter its rated maximum input in BTU/hr. Mark whether it is already connected or planned.

Existing connected load
0
Planned additional load
0
Planned total load
0

Copyable Load Summary

BTU totals are arithmetic only. A qualified professional should verify actual connected load, diversity rules where applicable, meter/service capacity, regulator requirements, pipe material, developed length, allowable pressure drop, and local code requirements before modifying a gas system.

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What Is a Gas Appliance BTU Load?

Gas appliances are commonly labeled with a maximum input rating in BTU per hour. Adding those ratings provides a useful project summary of the appliance demand entered, but the arithmetic total by itself does not determine gas pipe size or confirm system capacity.

Where to Find an Appliance BTU Rating

Use the equipment nameplate, installation manual, specification sheet, or manufacturer documentation. Avoid guessing from the appliance category because different furnaces, water heaters, generators, fireplaces, ranges, and commercial appliances can have very different input ratings.

Why the Total Is Useful

  • Summarize existing gas appliance demand for a contractor.
  • Show how much rated appliance load a planned addition introduces.
  • Create a cleaner project brief for a generator, furnace, water heater, fireplace, range, or other appliance.
  • Give HVAC, plumbing, fireplace, generator, and appliance professionals the equipment inputs you already know.
  • Reduce back-and-forth when requesting a gas line estimate.

Why This Tool Does Not Size Gas Pipe

Gas pipe sizing depends on more than total BTU. A professional may need to evaluate the fuel-gas system design, supply pressure, allowable pressure drop, pipe material, developed length, fittings, equipment requirements, meter or service capacity, regulators, and applicable codes. For that reason, this calculator stops at a load summary rather than recommending a pipe diameter.

Turn the Load Summary Into a Project Brief

Browse the full gas line planning tools collection. Once you have the appliance ratings, add the route, location, approximate distance, timing, and project notes with the Gas Line Project Brief Generator. You can also use the Utah Gas Line Cost Estimator for early budgeting.

Common Gas Appliances to Include

Depending on the property, the connected gas load may include furnaces, boilers, tank or tankless water heaters, ranges, cooktops, ovens, dryers, fireplaces, generators, grills, fire pits, pool or spa heaters, and commercial equipment.

Gas Appliance Load Calculator FAQs

Does total BTU tell me what gas pipe size I need?

No. Total appliance input is only one part of gas-system design. Pipe sizing also depends on factors such as pressure, developed length, material, system layout, equipment requirements, and the applicable code methodology.

Should I use the appliance output or input BTU?

For a connected gas-load summary, use the appliance’s rated gas input shown by the manufacturer rather than heating output.

Can I use the calculator before adding a generator or tankless water heater?

Yes. Mark existing appliances as existing and the proposed equipment as planned. The tool will show the entered current load, added load, and combined load so you can share those figures during a professional capacity evaluation.

Need a Gas Line for New Equipment?

For a non-emergency Utah project, provide the equipment model, rated input, property location, likely route, and approximate line distance when requesting a quote.

Request a Gas Line Quote

The request form is just below.

Before you request a quote

Permits and inspections. Gas piping work usually needs a permit from your city or county building department. That includes new lines, extensions, and many appliance installations and replacements. New piping is pressure-tested and inspected before gas is turned on. Requirements vary by city. Ask the provider who will get the permit and schedule inspections, and get the scope and price in writing before work starts.

Send Your Gas Line Project Details

  1. Describe the project and the property location.
  2. The request is routed by service type and location.
  3. The provider handling the work confirms licensing, availability, pricing and project acceptance with you.

Smell gas? Leave the area now. From a safe place, call 911 and Enbridge Gas Utah at 1-800-767-1689. Don't use this form to report a gas leak.

If your natural gas comes from a different utility, or you use propane, call that company's emergency number instead.

Do you smell gas or suspect a gas leak right now? (required)

If you do, this form can't help. Leave the area first.

Leave the area first — this form can't help with a gas emergency

Natural gas has no smell of its own. An odorant is added so a leak smells like rotten eggs. Other warning signs are:

  • a hissing, whistling or roaring sound near a gas line or appliance;
  • a damaged appliance connection;
  • dead or discolored plants over a buried line;
  • dirt blowing into the air;
  • bubbles rising in standing water.

Do this now

  1. Leave the building or area right away, and warn others to stay away.
  2. From a safe place, call 911 and Enbridge Gas Utah's 24-hour emergency line, 1-800-767-1689. Don't assume someone else has called. A gas leak can't be reported online, and this website can't respond to emergencies.

Don't

  • Don't turn lights, appliances or any electric switch on or off.
  • Don't use a phone, garage door opener or flashlight near the leak.
  • Don't smoke, strike a match or use a lighter.
  • Don't start or stop vehicles or machinery nearby.
  • Don't try to turn gas valves on or off.
  • If leaking gas is on fire, call 911. Don't try to put it out.

If your natural gas comes from a different utility, or you use propane, call that company's emergency number instead.

Once the utility or emergency responders say the area is safe, you can use this site to request a quote to repair gas piping you own.

Safety steps summarized from Enbridge Gas Utah's published leak guidance (checked September 24, 2026). GasLineInstallationUtah.com is not affiliated with Enbridge Gas Utah.

Nothing you type here is sent while your answer is "Yes". Once it's safe, choose "No" above to request a non-emergency repair quote.

Project
What will the gas line serve? (optional, choose any)
Property type (required)

Utah ZIP codes start with 84.

Details (optional)

Everything here is optional — answer what you know.

A rough guess is fine. Pacing it off works.

Where would the gas line run? (optional, choose any)
Before anyone digs. Utah law requires contacting Blue Stakes of Utah 811 before excavating. Dial 811 or go to bluestakes.org. Blue Stakes suggests submitting your request at least three business days ahead. Utilities mark only the lines they own, which usually stop at the meter. Gas lines, irrigation and lighting cables you own beyond the meter usually won't be marked, so tell the installer about any private lines you know of and ask whether a private locator is needed. If a gas line is hit while digging, leave the area and call 911 and Enbridge Gas Utah at 1-800-767-1689 from a safe place.
Does the property already have natural gas service? (optional)

In almost all cases the gas utility's system ends at the meter; piping after the meter belongs to the property owner.

Is the gas shut off right now? (optional)

Please don't include passwords, payment details or ID numbers.

Photos (optional)

Photos help the provider size the job. Only take photos where it's safe — never near a suspected leak. Don't include gas bills, account numbers or people in photos. JPG, PNG, WEBP or HEIC, up to 10 MB each, 6 photos in total.

Photos are shared with the provider that receives your request. Phone photos can include the location where they were taken.

Contact
How should the provider reach you?

Enter a phone number, an email address, or both. At least one is required.

By sending this request, you agree that GasLineInstallationUtah.com may share it with one independent gas line provider serving your area, and that the provider may contact you about this request by phone or email using the details you entered. This isn't consent to automated calls, prerecorded messages or marketing texts.

We use these details to handle your request and share them with the provider that receives it. That includes any photos you attach. Don't include gas bills, account numbers or payment details.

GasLineInstallationUtah.com is a quote-request website, not a gas contractor. It doesn't do gas work. Your request goes to one independent provider that serves your area, and that provider confirms licensing, availability, scope and price directly with you. Sending a request doesn't book work, and you're free to get other quotes.

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    Gas Line Installation

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  • Service

    Gas Leak Repair

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Where we route requests

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