When the hot water disappears on a cold Lake in the Hills morning, you need a straight answer fast: repair the unit or replace it. Ludwig Family Plumbing diagnoses the actual failure — thermocouple, heating element, gas valve, anode rod, or a rusted-through tank — before we quote a dime, so you are not paying to replace a heater that only needs a $30 part.
We service and install every common setup in McHenry County: 40- and 50-gallon natural-gas and electric tanks, high-recovery models for large families, and tankless units for homes that never want to run out. Every replacement is sized to your home's real demand, vented to code, and finished with a workmanship warranty in writing.
Signs You Need Water Heater Repair & Install
- No hot water, or it runs out far faster than it used to
- Rusty, cloudy, or metallic-smelling hot water
- Popping, rumbling, or banging from the tank (sediment buildup)
- Water pooling around the base of the heater
- The pilot won't stay lit or the burner keeps shutting off
- The unit is 10+ years old and you want to get ahead of a failure
Repair or replace? How we decide
Age, tank condition, and the cost of the failing part drive the decision. A leaking tank is always a replacement — the steel shell has corroded through and no repair will hold. But a unit under about eight years old with a bad element, thermostat, or gas control valve is usually worth repairing.
We show you the trade-off honestly: the repair price, the remaining life you're buying, and what a new high-efficiency unit would cost and save on the gas or electric bill. You make the call with real numbers, not a pushy upsell.
- Leaking tank → replace (no safe repair)
- Bad element / thermocouple / thermostat → typically repair
- 10+ years old + major part failure → usually replace
- Chronic sediment & noise on hard water → flush now, plan replacement
Our installation process
A proper install is more than swapping a box. We shut off and drain safely, haul away your old unit, set and level the new heater, connect gas or power, install a new temperature-and-pressure relief valve and drip leg where required, vent correctly, and fill and test for leaks before we leave. If a permit is required for your job, we coordinate it.
What affects the price
We never post fake flat prices, because the honest number depends on the job in front of us. The main cost factors are:
- Tank vs. tankless, and the capacity your household needs
- Fuel type and whether gas, venting, or electrical needs to be brought to code
- Expansion tank, new shutoff, pan, or code upgrades your setup requires
- Difficult access (tight closets, finished basements, second-floor units)
- Permit and inspection fees when applicable
Hard water and your water heater in McHenry County
Much of McHenry County runs on hard, mineral-heavy water — well or municipal. Those minerals settle as sediment in the bottom of a tank, insulate the burner, and shorten the heater's life while raising your energy bill. If you're on hard water, we'll recommend an annual flush and, where it makes sense, pairing a new heater with a water softener so you protect the investment.
Our Water Heater Repair & Install Process
Every job follows the same clear path — so you know what happens next and there are no surprises along the way.
- 1
Diagnose the real failure
We test the thermostat, element or burner, thermocouple, gas valve, and anode rod, and check the tank for corrosion before we recommend repair or replacement.
- 2
Size and quote the options
If replacement is the smart call, we size the unit to your household's real hot-water demand and give you tank and tankless prices side by side, in writing.
- 3
Drain and remove safely
We shut off the water and gas or power, drain the old unit, and haul it away — no old tank left in your garage.
- 4
Install to code
We set and level the new heater, connect gas or electric, fit a new T&P relief valve and drip leg where required, and vent it correctly.
- 5
Fill, test, and walk you through it
We refill, check every connection for leaks, verify recovery, and show you the shutoffs and maintenance before we leave.
Why McHenry County Homeowners Choose Ludwig
When a water heater fails, the honest question is repair or replace — and we answer it with real numbers, not a pushy upsell.
Family-Owned & Local
A family name you can trust, serving McHenry County since 2016. You reach us, not a call center.
24/7 Emergency Service
Burst pipe or backup at 2 a.m.? We answer around the clock, every day of the year.
Licensed, Bonded & Insured
Fully licensed Illinois plumbers — your home and your investment are protected.
68 Five-Star Reviews
Neighbors across McHenry County rate us 4.9 stars for honest, quality work.
Water Heater Repair & Install Across McHenry County & Beyond
We install and repair water heaters from Lake in the Hills and Algonquin to Huntley, Crystal Lake, and Woodstock, with same-day service across McHenry County when we can.
Based in Lake in the Hills, we cover the whole county and the surrounding Fox Valley. Find your town on our service-areas page, or start with Algonquin, Crystal Lake, Cary, Huntley.
Related Plumbing Services
Water Heater Repair & Install FAQs
A straightforward tank-for-tank replacement is typically 2–3 hours. A tankless conversion, a fuel-type change, or code upgrades to gas, venting, or electrical can take most of a day. We give you a realistic time window before we start.
Tankless units deliver endless hot water and last longer, but they cost more up front and sometimes need gas-line or venting upgrades. They're a strong fit for larger households and homeowners staying long-term. We'll size both options and show you the payback so the choice is clear.
A conventional tank generally lasts 8–12 years, but McHenry County's hard water can cut that short without maintenance. Tankless units often run 20 years. An annual flush is the single best thing you can do to extend the life of either.
A leaking tank should be addressed the same day. Shut off the water supply to the heater and, for gas units, turn the control to 'off'; for electric, switch off the breaker. Then call us and keep the area clear while it drains.
Often, yes. A straightforward tank-for-tank swap can usually be done the same day when we have the unit on the truck or nearby. A tankless conversion or a fuel-type change may take longer, and we'll give you a realistic window before we start.