A heat pump water heater is the most efficient way to make hot water with electricity. For Pittsburgh homeowners without natural gas service (or who want to get off gas), it’s the right answer almost every time. Wahl installs the Rheem ProTerra series across Allegheny County, and we’ve gotten very good at the small details that make the difference between a great install and a noisy headache.

How a heat pump water heater works

A heat pump water heater (HPWH) looks like a standard electric tank water heater with a small box on top. The box contains a heat pump that pulls heat out of the surrounding air and transfers it into the water. It’s the same technology as an air conditioner, run backward, and it’s between two and four times more efficient than a traditional electric resistance tank.

The trade-off is that the heat pump pulls heat from the room the heater sits in, so that room gets a few degrees cooler and slightly drier when the unit is running. In a Pittsburgh basement, that’s often a feature, not a bug.

Why we recommend the Rheem ProTerra

The ProTerra is Rheem’s hybrid heat pump water heater. We sell and install it as our standard recommendation for any Pittsburgh customer in these situations:

• No natural gas service at the home
• An aging electric tank that needs replacement
• A homeowner who wants the lowest possible operating cost
• A homeowner aiming for the 30% federal tax credit

The ProTerra comes in 50, 65, and 80-gallon sizes. We carry the 50 and 65-gallon as standard inventory, and the 80 is a quick special order.

What the ProTerra includes that we like:

• 10-year tank warranty (longer than most electric tanks)
• Built-in WiFi (you can check status from your phone)
• Vacation mode (drop the setpoint when you’re away)
• Mixed-fluid temperature controls
• Quiet operation (around 49 decibels, similar to a quiet refrigerator)
• LeakGuard sensor that shuts off water automatically if a leak is detected
• Eligible for the 30% federal tax credit (up to $2,000 back)

The Pittsburgh fit: when HPWH is great, when it isn’t

Great fit: – Unfinished basement with reasonable headroom (at least 7 feet) – Room volume around the unit of 700 cubic feet or more (basement utility room counts) – A floor drain or condensate pump connection within reach – 30-amp 240V circuit available, or panel space to add one – Pittsburgh homeowners who keep the basement cooler in summer naturally; the dehumidifying effect is a bonus

Tougher fit: – Small mechanical closet on the main floor (room volume too low, sound carries) – Garages that drop below 40 degrees in winter (heat pump efficiency falls off; the unit falls back to resistance mode and you lose much of the savings) – Attic installations (we can do it, but condensate management gets complicated) – Homes with no nearby drain (we use a condensate pump in this case)

We walk through this on the visit. If the spot you want to install it in doesn’t suit a heat pump, we’ll show you alternatives.

What the install includes

1. Pull and dispose of the old water heater.
2. Verify or install a 30-amp 240V dedicated circuit. Most homes already have one if the previous heater was electric. Gas-to-electric conversions need a new circuit.
3. Install the new ProTerra on a safety pan or platform.
4. Connect the cold supply with new isolation valve, hot output, and code-compliant T&P discharge.
5. Run a condensate line to a floor drain, or install a condensate pump. The ProTerra produces about one to two gallons of condensate a day in normal operation, which has to go somewhere.
6. Install an expansion tank if your home has a pressure-reducing valve or a check valve at the meter (most Pittsburgh homes do, this is code).
7. Optional: add a Nuvo conditioner, scale inhibitor, or carbon filter on the inlet if your water quality is hard or chlorinated. We recommend at minimum a basic inlet filter for any HPWH install to keep sediment out of the tank.
8. Configure WiFi, set vacation mode defaults, and walk you through the app.
9. Pull the permit. Test, commission, and clean up.

A typical ProTerra install takes 4 to 6 hours of two-person crew time, and is almost always finished same-day.

What it costs (and what the tax credit does)

We present exact pricing in your home after a free in-home estimate. Heat pump water heaters sit in the mid-range of our water-heating ladder before the federal tax credit kicks in. The Inflation Reduction Act 25C credit currently returns 30% of the install cost, capped at $2,000, on qualifying heat pump water heaters. The Rheem ProTerra qualifies. After the credit, the net investment often drops a meaningful tier on our ladder.

Duquesne Light and other Pittsburgh utilities occasionally run additional rebates on HPWH installs. We track the active rebates and apply them at quote time.

We don’t try to give you a phone-quote price. Part of our process is presenting numbers in person, on paper, after we measure, check the electrical, and check the drain. Both standard and Wahl Club member rates are shown side by side.

Annual operating cost vs. a standard electric tank

For a typical Pittsburgh family of four, a heat pump water heater runs roughly a quarter of the annual electricity of a standard 50-gallon electric tank. Over a 12 to 15-year life, the operating savings stack into thousands of dollars before you even account for the federal tax credit. Combined, the math is hard to argue with for any Pittsburgh home that fits the install. We’ll model your specific savings against your current usage during the visit.