Home/Residential HVAC/Water Heaters

Residential hot-water equipment

Hot water equipment
sized for the house.

EMH Mechanical repairs and replaces residential water heaters, including standard gas, power-vent, high-efficiency and tankless equipment. We check the unit, venting, gas supply and installation conditions before recommending a replacement.

Navien high-efficiency tankless water heater installed by EMH Mechanical
Tankless Water Heater InstallationHigh-efficiency Navien tankless water heater
Standard GasTank replacement and service
Power VentEquipment and venting
TanklessHigh-efficiency applications
CorrectionsGas, vent and drain piping

Choose the right replacement

A water heater is more than the number on the tank.

Tank size matters, but recovery rate, venting and fuel capacity matter too.

A 40- or 50-gallon label does not tell the whole story. Burner input, first-hour rating, incoming water temperature and the way the household uses hot water determine whether the equipment can keep up.

Before installing a different type or size, we check the available gas, vent route, electrical requirements, drain location, clearances and service access.

Water heater work

Repair, replacement and installation without skipping the surrounding piping.

Service for existing equipment and replacement options based on the home, fuel supply, venting and hot-water demand.

01

Diagnosis & Repair

Testing for ignition, combustion, controls, venting, leaking connections and other serviceable problems.

02

Gas Tank Replacement

Standard atmospheric gas water heaters selected around capacity, recovery, venting and available space.

03

Power-Vent Systems

Power-vent equipment installed with approved vent materials, electrical power and exterior clearances.

04

Tankless Water Heaters

On-demand equipment sized around incoming water temperature, flow rate and simultaneous fixture use.

05

High-Efficiency Equipment

Condensing and other high-efficiency applications reviewed for venting, condensate and installation requirements.

06

Venting Corrections

Accessible draft, vent connector, termination and material corrections included when stated in the work scope.

07

Gas & Water Piping

Equipment connections, shutoffs and accessible piping changes required for the selected replacement.

08

Drain & Safety Items

Temperature-and-pressure relief drainage, drain pans, condensate and expansion control where required.

Common residential choices

The existing installation usually narrows the options.

01 / Atmospheric Gas Tank

A straightforward tank when the vent and chimney can draft correctly.

Standard gas water heaters do not require a powered exhaust blower. The vent connector, chimney, combustion air and installation room still have to support safe natural draft.

02 / Power-Vent Tank

A tank with a blower that moves combustion gases outdoors.

Power-vent equipment can allow different vent routing, but it requires electrical power, approved materials and proper termination clearances.

03 / Tankless or Condensing

Higher-output equipment with different gas, vent and maintenance needs.

These systems can work well when the building can support the required gas input, flow rate, condensate drainage, electrical power and service requirements.

Repair or replace

Find the source of the problem before condemning the tank.

Repair may make sense

The tank is sound and the failed part or connection is serviceable.

Ignition parts, controls, valves and external piping can sometimes be repaired when the tank itself is not leaking and the overall installation is still in usable condition.

  • Leak is outside the tank
  • Repair parts are available
  • Venting and combustion can be corrected
  • Repair cost fits the age and condition
Replacement may make sense

The tank is leaking, badly corroded or no longer worth repairing.

A leaking tank is not repaired. Replacement may also be the better choice when age, repeated failures, poor recovery or an unsafe installation make additional repair hard to justify.

  • Tank or jacket is leaking
  • Heavy corrosion is present
  • Repair history is adding up
  • Capacity no longer fits the household
Water heater installed by EMH Mechanical at an apartment complex

Multifamily water heating

Apartment buildings need a different equipment plan.

Multifamily properties can put much heavier demand on their hot-water equipment than a single home. Capacity, recovery, venting, gas supply, controls and service access all have to be reviewed together.

EMH Mechanical installs and services water-heating equipment for apartment and multifamily properties. We inspect the existing system and spell out the equipment, piping and related work included in the proposal.

Discuss a Multifamily Project

Replacement process

Confirm the equipment and connections before installation day.

  1. 01

    Inspect

    We review the existing unit, leak or failure, venting, gas, water and installation space.

  2. 02

    Select

    Capacity, recovery, fuel type and venting requirements are matched to the home.

  3. 03

    Scope

    The proposal identifies the equipment, piping changes, vent work and other included corrections.

  4. 04

    Install

    The old unit is removed and the new water heater and agreed mechanical connections are completed.

  5. 05

    Test

    We check operation, draft or venting, combustion where applicable, temperature and visible leaks.

Written equipment and labor terms

Know what is covered before the work starts.

Water heater manufacturer coverage varies by brand and model. EMH Mechanical lists the equipment, included installation work and applicable labor warranty in the proposal so the coverage is clear.

*Registration, maintenance, water quality and other manufacturer requirements may apply.
Before we quote replacement

Send the model number and installation photos.

Photos of the full water heater, model and serial label, vent connection, nearby piping and the installation room help us understand what is already there.

For a tankless estimate, include the household size, bathrooms and any fixtures expected to run at the same time.

Start a water heater request

Local water heater contractor

Serving our five-county Michigan territory.

EMH Mechanical provides residential water heater repair, replacement and installation throughout Northern Oakland County, Northern Macomb County, St. Clair County, Genesee County and Lapeer County. Call with the property address and equipment information so we can confirm availability.

Water heater questions

What to know before repairing or replacing the unit.

The tank, burner, vent, gas supply and household demand all affect the recommendation.

How long does a residential water heater usually last?+

Age alone does not decide whether a water heater needs replacement, but tank condition, leakage, venting, combustion, recovery and repair history matter. Many conventional tank water heaters are evaluated more closely once they are around 10 years old, especially if corrosion or leakage is present.

Should I repair or replace a leaking water heater?+

A leaking fitting, valve or piping connection may be repairable. A tank that is leaking through the jacket or from the tank itself generally requires replacement. We locate the source before recommending the next step.

What is the difference between standard and power-vent water heaters?+

A standard atmospheric water heater uses natural draft through a metal vent. A power-vent model uses a blower to move combustion gases through an approved vent system. The existing vent, installation location, gas supply, electrical access and replacement layout determine which type can be used.

Is a tankless water heater right for every house?+

No. Tankless equipment can provide long draws of hot water, but the unit must be sized for incoming water temperature and simultaneous demand. Gas capacity, venting, electrical power, water quality and maintenance access all have to be checked first.

Can a larger tank fix a hot-water shortage?+

Sometimes, but tank size is only one factor. Burner input, recovery rate, temperature setting, fixture demand and usage pattern determine how much hot water is available. We review the cause before recommending a larger unit.

Do you correct water-heater venting and gas piping?+

Yes. When included in the agreed scope, we correct accessible venting, gas piping, shutoffs, drain piping and related mechanical items that do not meet the equipment requirements or applicable code. Larger building-wide piping changes may require a separate scope.

Do tankless water heaters need maintenance?+

Yes. Maintenance requirements vary by manufacturer and water conditions, but periodic flushing, inlet-screen cleaning, combustion inspection and checking the condensate system may be required. The installation paperwork should be followed for the specific model.

Where does EMH Mechanical provide water heater service?+

Our primary territory includes Northern Oakland County, Northern Macomb County, St. Clair County, Genesee County and Lapeer County. Call with the property address, equipment type and a description of the problem so we can confirm availability.

Need water heater service?

Tell us what the unit is doing.

Call EMH Mechanical or send the property address, equipment label, installation photos and a short description of the leak, no-hot-water problem or replacement request.