Water Heaters and Boiler Service in Union County, Illinois

Conventional (tank) water heaters — natural gas, propane & electric

For larger households running multiple showers and appliances, a conventional tank heater is usually the most affordable option up front, and with routine maintenance it typically lasts around 10–15 years. We install, replace, and service conventional tank heaters in all three fuel types — natural gas, propane (LP), and electric — which matters here, since many rural Union County and lake-area properties run on propane or electric rather than natural gas. We’ll match the unit to whatever fuel your home already uses (and handle the gas-line work if needed).

Tankless water heaters

Tankless units heat water on demand, so you’re not paying to keep a tank hot around the clock. They cost more up front but tend to last 20+ years and can lower energy use — a strong fit for smaller homes or anyone tired of running out of hot water. We install and service tankless water heaters in natural gas, propane, and electric models, and we’ll tell you honestly whether your home’s gas or electrical capacity is a good fit before you commit.

Common water heater problems we fix

Leaks, sediment buildup, pilot light going out, expansion-tank issues, discolored or foul-smelling water, unusual sounds, and water that’s too hot or never hot enough. Many are cheaper to fix early — call before a small issue becomes a full replacement.

Hot Water Showers

Nobody wants a cold shower in December. When your water heater leaks, runs out of hot water fast, or makes strange noises, Sullivan Plumbing repairs and replaces it — and we’ll give you a straight recommendation on whether repair or replacement makes more sense for your home and budget.

Repair or replace?

If your unit is near the end of its lifespan and the repair is costly, replacement is often the smarter money. We’ll lay out both numbers so you decide. Note that Union County’s hard water is tough on tanks — if hard water is shortening your equipment’s life, ask us about Water Treatment.

Boilers, Heating & Fuel Conversions

Beyond water heaters, Sullivan handles the connected heating and gas work many Union County homes need. We provide boiler inspections, service and hot water heaters serviced of all types, install and repair gas lines, and handle the ventilation that gas and combustion appliances require to run safely. We also do fuel conversions — oil-to-gas, electric-to-gas, and electric-heat conversions — for homeowners moving to a more efficient or lower-cost system. As licensed heating contractors, we’ll assess your setup

FAQ

Repair or replace?

If the unit is old and the repair is expensive, replacement usually wins. We price both.

Tank or tankless?

Depends on household size and hot-water demand; we’ll help you weigh it honestly.

Do you do gas, propane, and electric?

Yes — we install and service tank and tankless units in natural gas, propane (LP), and electric, and match the unit to your home’s existing fuel.

Do you inspect boilers?

Yes — boiler inspections are part of what we do.