104 Emerald St, Keene, NH  ·  Mon–Sat 8:30–6, Sun 11–3 (603) 795-0100 Book a Consult

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Water heaters

The right water heater is a sizing problem, not a product problem. We calculate your peak simultaneous demand — the morning where two showers and the dishwasher all run — and size to that.

What we carry

Water heaters, specified with the room

Tankless

Electric tankless

Stiebel Eltron whole-home tankless — endless hot water, wall-mounted, no tank to leak, if your electrical service can carry it.

Point

Point-of-use

A small under-sink unit for a far bathroom or a bar sink so you are not waiting 45 seconds for hot water.

Hybrid

Heat-pump (hybrid)

The most efficient tank option — pulls heat from the air, cuts the water-heating bill by more than half, wants a semi-conditioned space.

Size

Peak demand sizing

Run the water heater calculator — fixtures and household size to the capacity or flow rate you need.

Electric

All-electric ready

Sizing and panel-load planning for an all-electric or solar house — no gas or propane line.

Install

With your remodel

Swapped or relocated while the mechanical room or bath is already open — the cheap time to do it.

Lines on the floor

Brands

Stiebel Eltron
Rheem
AO Smith
Bosch
Bradford White

Full brand directory

Tankless or a tank?

Electric tankless gives endless hot water and no tank to leak or lose standby heat, but it draws a lot of amps — your panel and service have to support it. A hybrid heat-pump tank is the most efficient tank option and cuts the water-heating bill by more than half. We size to your peak demand either way.

What size do I need?

It is about peak simultaneous demand, not house size — the morning where two showers and the dishwasher run at once. Run the water heater calculator: fixtures plus household size gives the tank gallons or the tankless flow rate.

Can you do an all-electric house?

Yes — we plan the panel load for a tankless or heat-pump water heater alongside an induction range, heat pumps and EV charging, so nothing trips when it all runs together.

Shop online

Water heaters

Order online with secure checkout — or have our crews install it with the rest of the project.

Shop all water heaters →
Start here

Book a consult

Tell us the room, a rough budget range and when you'd like to start. We'll come back with next steps and a realistic timeline — no pressure, no mystery pricing.

(603) 795-0100  ·  toll-free 844-438-7674 sales@poshhaus.com 104 Emerald St, Keene, NH 03431 Mon–Sat 8:30–6 · Sun 11–3

We reply within one business day. Your details go straight to our team at sales@poshhaus.com.