We service Barrington, IL & Greater Chicagoland. Not sure if we service your area? Give us a call.
Water heater repair is not a side job for us. Water heaters are in our company name, and RJ's Heating, Cooling & Water Heaters repairs, replaces, and installs them across Barrington, IL and the Northwest suburbs alongside the furnaces, boilers, and air conditioners we work on every day. We are HVAC and water heater specialists, not a general contractor, so the technician who shows up works on tank and tankless units every week and carries the common parts on the truck.
Most calls get same-day service. If you have no hot water, a leaking tank, or a unit that has reached the end of its life, call or text 773-640-0334. We diagnose first, quote before any work starts, and fix or replace the unit the same visit whenever the parts allow.
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A water heater rarely fails without warning. These are the symptoms that usually bring us out to a home in Barrington:
Here is what a repair visit looks like. The technician diagnoses the unit, explains what failed and why, and gives you an upfront quote before any work starts. Common repairs such as thermocouples, gas valves, thermostats, heating elements, igniters, flow sensors, and relief valves are fixed on the spot when the part is on the truck, which is most of the time. If the tank itself is corroded or leaking, we tell you plainly that a repair is not worth the money and quote a replacement instead. We schedule same-day during our normal working day whenever the route allows, so the earlier you call, the better.
We service both styles of unit. For a storage tank problem, see our tank water heater repair page. For an on-demand unit, see tankless water heater repair. Either way, the call starts at 773-640-0334.
Sizing comes first. Before we recommend a unit we ask how your household uses hot water: how many people, how many bathrooms, and whether the laundry and dishwasher run at the same time as showers. A 40-gallon tank that was fine for two people falls short for a family of five. A tankless unit is sized by flow rate in gallons per minute and by the temperature rise it has to deliver in a Chicago-area winter, not by storage.
What replacement day looks like. We shut off the water and the fuel, drain the old tank, disconnect it, and haul it away. The new unit goes in with the code updates the old install probably did not have:
We fill, purge, light, and test the unit before we leave, and we show you where the shutoffs are. Most like-for-like tank swaps are finished in a single visit. Tankless conversions take longer because the venting, gas supply, and water lines usually change.
We install State tank units and Navien tankless units. See tank water heater installation for storage tanks, or tankless water heater installation in Barrington if you are considering an on-demand system.
Prevent costly breakdowns and keep your HVAC system running at peak efficiency year-round with our Comfort Club Maintenance Plan. Routine HVAC maintenance improves energy efficiency, extends system lifespan, and prevents unexpected failures. Regular maintenance saves you money on energy bills and prevents costly emergency repairs. Sign up today and enjoy worry-free heating and cooling throughout the Chicagoland area!
Join Our Comfort Club Comfort Club DetailsSeasonal HVAC tune-ups to ensure optimal performance.
Priority service—jump to the front of the line for repairs.
Exclusive discounts on repairs and system replacements.
Extended equipment lifespan through regular maintenance.
Furnace and AC inspections & tune-ups
Ductwork and air filter checks
Refrigerant level and thermostat calibration
Water heater efficiency checks
Both types heat water reliably when they are sized and installed correctly. The honest difference is what you pay up front, what you pay to run it, and how much hot water you need at once.
| Tank | Tankless | |
|---|---|---|
| Upfront cost | Lower. The unit is simpler and the install usually reuses the existing venting and connections. | Higher. The unit costs more, and a conversion often needs new venting, a larger gas line, and an electrical outlet. |
| Operating cost | Higher. The tank keeps 40 to 50 gallons hot even when nobody is using water. | Lower. It heats only when a tap opens. |
| Lifespan | 8 to 12 years is typical. | 15 to 20 years is typical with regular descaling. |
| Hot-water supply | A fixed stored amount that recovers over time once it is drained. | On demand for as long as a tap runs, limited by flow rate rather than storage. |
| Space | A floor footprint in a utility room, basement, or closet. | Wall-mounted, about the size of a small suitcase. |
| Best fit | Budget-first replacements, homes with venting already in place, and smaller households. | Larger households, homes short on space, and owners who plan to stay long enough to recover the higher upfront cost. |
Tank wins on upfront cost and simplicity. Tankless wins on endless hot water, footprint, and lifespan. If you are on the fence, we quote both on the same visit so you can compare real numbers rather than guesses.
Homes around Barrington run on well water or municipal supply, and both carry enough dissolved calcium and magnesium to leave scale behind. Well water in the unincorporated areas is usually harder, but Lake Michigan water delivered to many Northwest suburbs still scales a heat exchanger over time.
In a tank, that scale settles as sediment at the bottom, insulates the burner from the water, causes the rumbling and popping homeowners hear, and shortens the life of the tank. In a tankless unit, it coats the inside of the heat exchanger and cuts flow and efficiency until the unit throws an error code.
Three things keep hard water from killing a water heater early: an anode rod check every couple of years on a tank, a sediment flush once a year, and an annual descaling on a tankless unit. All three are part of our maintenance visits, and a water softener reduces how often they are needed.
We install State tank and tankless water heaters and Navien tankless units. State builds dependable gas and electric storage tanks in the common residential sizes, and Navien is the tankless line we install most often because of its efficiency and the availability of parts. Both manufacturers back their equipment with strong warranties, and we register the unit for you.
We service most major brands, not only the ones we sell. If you have an existing unit from another manufacturer, we can repair it and keep it running until a replacement makes sense.
You get a flat quote before any work starts, whether it is a repair or a full replacement, and the number does not change once the job is underway unless you approve added work. For replacements, the quote covers the unit, removal and disposal of the old one, the code updates listed above, and the labor. Financing is available through Service Finance for replacements and tankless conversions, so a failed water heater does not have to wait on a budget.
At RJ's Heating, Cooling & Water Heaters, we believe that quality HVAC services should be affordable for every homeowner and business. That's why we offer flexible financing options to help you invest in new heating, cooling, or water heating systems without financial stress.
Whether you need a new furnace, air conditioner, or water heater, our trusted financing partners make it easy to spread out payments over time. Contact us today to learn more about your financing options in Barrington, IL!
Apply NowRJ's Heating, Cooling & Water Heaters replaces water heaters throughout Barrington and the Northwest Chicago suburbs, and most straightforward tank replacements can be scheduled same-day or next-day. Call 773-640-0334 with your tank's location and any error codes, and we'll confirm timing and bring the right unit.
Turn off the cold-water shutoff valve above the tank, cut power at the breaker for electric models or set the gas valve to off, and call us. Even small leaks can signal tank corrosion or a failing relief valve, so have it inspected before water damage spreads.
Most like-for-like tank replacements are finished in a single visit of two to four hours. Tankless conversions take longer, usually a full day, because of venting, gas line, and water line changes. We confirm scope and timing up front with an exact quote.
We install State tank and tankless water heaters and Navien tankless units, and we service most major brands. Both manufacturers back their equipment with strong warranties, and we'll size the unit to your household's hot water demand before recommending a model.
Tank water heaters cost less up front and deliver a large stored supply; tankless models heat on demand, run more efficiently, and last 15 to 20 years versus 8 to 12 for tanks. The right choice depends on your usage, space, and budget, and we'll walk you through both.
Cost depends on tank size, fuel type, venting, and whether you switch to tankless: a like-for-like tank swap sits at the low end and a tankless conversion at the high end. RJ's gives upfront, all-in quotes before work begins, and financing is available through Service Finance.
A softener isn't required, but Northwest-suburb water is hard, and scale is the main enemy of a tankless heat exchanger. If you don't soften your water, plan on annual descaling maintenance, something we handle, to protect efficiency and the heat exchanger over the unit's life.
At RJ's Heating, Cooling & Water Heaters, we are:
As a family-owned HVAC company with over 25 years of experience, we proudly serve Barrington and Northwest Chicago. As an Aprilaire Partner, we deliver trusted, high-quality comfort solutions.
We offer 24/7 emergency service for HVAC and water heaters, upfront pricing with no surprises, and highly rated craftsmanship trusted by home and businessowners throughout the region.
We proudly install and service trusted brands like Navien, MagicPak, Daikin, Burnham, Weil-McLain, Aprilaire, Reme Halo, and State Water Heaters—ensuring lasting performance and comfort you can rely on.
Our shop is at 214 South Hager Unit 2, Barrington, IL 60010, which puts most of the Northwest suburbs within a short drive for a same-day water heater call. We regularly replace and repair water heaters in Palatine, Mount Prospect, Hoffman Estates, Schaumburg, Skokie, and the surrounding communities. If you are not sure whether your address is in range, call or text 773-640-0334 and we will tell you straight away.
We proudly serve Barrington, IL, and Northwest Chicago, covering areas such as:
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Whether you need a water heater repair today, a like-for-like tank replacement, or a tankless conversion, RJ's Heating, Cooling & Water Heaters handles it from the first call to the final leak check. Call or text 773-640-0334 to schedule same-day service in Barrington and the Northwest suburbs, or send us a message and we will get back to you with a time and an upfront quote.
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