Why did gas therms drop but my bill stay high?

Supply rate increases, customer charge hikes, or winter heating on a shared meter can offset usage reductions. Decompose therms from $/therm.

Should I replace water heaters before dryers for gas savings?

Often yes when water heating drives load—EPA WaterSense cites water heating as most washer operating energy. Site-specific bills determine priority.

Do tankless water heaters always cut laundromat gas?

They can reduce standby losses but may increase peak gas draw during rush hours. Sizing and simultaneous use patterns determine net therms.

How Equipment Replacement Changes Gas Use

How Equipment Replacement Changes Laundromat Gas Use

Last reviewed 2026-09-12 by Jaken Energy editorial desk. Next review scheduled 2027-03-12.

Direct answer

Equipment replacement changes laundromat gas use when dryers, water heaters, boilers, or space heating systems become more efficient or change setpoints. DOE data place water heating at about half of commercial laundry primary energy—water heater upgrades can move therms as much as dryer swaps. Verify savings on normalized gas bills three months after commissioning.

Cited: [1] U.S. Department of Energy · [2] U.S. EPA · [3] Coin Laundry Association

Keep these

Key takeaways

Water heaters and boilers often dominate therms beyond dryers alone.
Heat pump water heaters shift load from gas to electric—track both meters.
Lower setpoints save gas but may affect wash quality—monitor complaints and rewashes.
Maintenance after install matters as much as equipment spec.
Compare degree-day-normalized therms when heating shares the meter.
Contract gas price affects dollars more than equipment when markets spike.

Major gas consumers in coin laundries

Dryers, water heating, space heating, and occasionally kitchen or tenant loads share gas service.

Map which equipment each meter serves before attributing therms changes.

Replacement scenarios

High-efficiency water heaters, condensing boilers, and modern dryers each change load differently.

Fuel switching to electric heat pump systems reduces gas but increases kWh—net cost depends on local rates.

Verification on bills

Normalize billing days and weather before claiming victory.

Separate supply rate changes from usage drops on the commodity portion.

Procurement timing with upgrades

If gas usage falls, indexed supply contracts may still price on historical bands until renewal.

Plan supplier renewals after measured post-upgrade usage is documented.

Q & A

Why did gas therms drop but my bill stay high?: Supply rate increases, customer charge hikes, or winter heating on a shared meter can offset usage reductions. Decompose therms from $/therm.
Should I replace water heaters before dryers for gas savings?: Often yes when water heating drives load—EPA WaterSense cites water heating as most washer operating energy. Site-specific bills determine priority.
Do tankless water heaters always cut laundromat gas?: They can reduce standby losses but may increase peak gas draw during rush hours. Sizing and simultaneous use patterns determine net therms.

Sources

Commercial Laundry Energy Use — U.S. Department of Energy
Supports: Water heating ~50% of commercial laundry primary energy
WaterSense Commercial Laundry — U.S. EPA
Supports: Water heating ~90% of washer operating energy
CLA Due Diligence Resources — Coin Laundry Association
Supports: Utilities often ~20–25% of revenue; request 1–3 years of bills

Row of commercial dryer drum openings with a warm heat glow.

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