Residential & Commercial

Water Heater Service & Install

Tank, tankless, and hybrid water heater installs and repairs. Hot water shouldn't be a guessing game — same-day service available.

  • Tank, tankless, and hybrid options — matched to your actual demand
  • Same-day service available for emergency situations
  • All major brands: Rheem, Bradford White, A.O. Smith, Navien, Rinnai
  • Proper sizing based on flow rate, temperature rise, and peak demand
Free estimate

Request a quote.

Protected by reCAPTCHA. We'll only use your info to respond about this request. No spam, no selling your data.

Hot water is one of those things you don't think about until it's gone. A cold shower on a Tuesday morning, a dishwasher that never gets hot enough to sanitize, or a puddle forming under a rusted-out tank in the garage — that's when the phone rings. Mears Mechanical installs and repairs tank, tankless, and hybrid water heaters for homes and businesses across the Treasure Valley, and we offer same-day service when your situation can't wait.

We work with all major water heater manufacturers including Rheem, Bradford White, A.O. Smith, Navien, Rinnai, and Noritz. Whether you need a standard 50-gallon tank replaced, want to upgrade to an energy-efficient tankless unit, or need a high-capacity commercial solution, we size the equipment to your household's actual hot water demand — not a guess based on how many bathrooms you have.

Tank water heaters remain the most common and cost-effective option for most homes. We install gas and electric models ranging from 40 to 80 gallons, with first-hour delivery ratings matched to your family's peak usage patterns. Installation includes proper venting for gas units, expansion tank where required by code, temperature and pressure relief valve piping, and seismic strapping in applicable installations.

Tankless water heaters provide endless hot water by heating on demand rather than storing a fixed volume. They're ideal for households that run multiple showers simultaneously, homes with limited space for a tank, or situations where the gas line and venting can support the higher BTU input. We size tankless units based on groundwater temperature (which runs around 45-50°F in the Boise area), flow rate demand, and temperature rise requirements. Installation includes gas line upsizing if needed, appropriate venting (direct vent or power vent depending on location), condensate drainage for high-efficiency models, and descaling valve installation for future maintenance.

Hybrid heat pump water heaters use a compressor to pull heat from surrounding air, making them two to three times more efficient than standard electric tanks. They work best in garages, basements, or utility rooms with adequate air volume and moderate ambient temperatures. We install and service all major hybrid models and can help you determine whether your installation location is suitable.

For commercial properties — restaurants, salons, gyms, laundromats, and multi-unit housing — we design and install high-capacity systems including commercial tankless banks, large-volume storage tanks, and recirculation systems that eliminate the wait for hot water at distant fixtures.

We also repair existing water heaters when replacement isn't necessary. Thermocouple replacements, element swaps, gas valve repairs, anode rod changes, and sediment flushes can extend the life of a tank that still has years left in it. We'll give you an honest assessment of whether repair or replacement makes more sense based on the unit's age and condition.

Ready to get started?

Free estimates · No pressure · Same-day callbacks

Our process

How it works.

01

Assess Your Needs

We evaluate your household size, hot water usage patterns, available space, fuel type, and budget to recommend the right water heater type and capacity.

02

Clear Quote

You receive a written estimate covering equipment, installation labor, any required gas line or venting modifications, permits, and disposal of the old unit. No surprises on install day.

03

Professional Installation

We remove the old unit, install the new water heater with proper connections, venting, and safety devices, and verify operation. Most tank replacements are completed in 3-4 hours.

04

Testing & Cleanup

We check for leaks, verify temperature settings, test safety relief valves, and confirm adequate hot water delivery at fixtures. The work area is left clean and the old unit is hauled away.

Why Mears

What you
get.

  • Tank, tankless, and hybrid options — matched to your actual demand
  • Same-day service available for emergency situations
  • All major brands: Rheem, Bradford White, A.O. Smith, Navien, Rinnai
  • Proper sizing based on flow rate, temperature rise, and peak demand
  • Gas line upsizing handled as part of tankless installations
  • Code-compliant installs with expansion tanks and proper venting
  • Repair service for units that don't need full replacement
  • Commercial solutions for restaurants, salons, gyms, and multi-unit buildings
FAQ

Common
questions.

Tank water heaters typically last 8-12 years depending on water quality and maintenance. Tankless units often last 20+ years with regular descaling. If your tank is over 10 years old and showing rust or inconsistent heating, it's time to plan a replacement before it fails completely.

It depends on your situation. Tankless units cost more upfront but use 30-50% less energy, last longer, and provide unlimited hot water. For large families or homes with high simultaneous demand, the payback period is typically 5-7 years. For a single person or couple, a standard tank may be more cost-effective.

A leaking tank usually means the internal liner has corroded through, and failure is imminent. Shut off the gas or breaker, close the cold water supply valve, and call us. We offer same-day replacement service for active leaks to prevent water damage.

Yes. Where permits are required by local jurisdiction, we pull them and schedule inspections. The permit cost is included in our quoted price so there are no unexpected fees.

Ready to get started?

Let's handle your
water heaters.

Call us directly or request a free quote online. Same crew on the phone, same crew at your door.