Planning a heat pump for a renovation or new build? Here’s what to ask before you sign a quote

If you’re building or doing a renovation, it’s easy to rush the heat pump part. The builder says, “We’ll sort that later,” or a quote lands in your inbox with a few lines and a total price. Before you hit “accept,” here are some simple questions that can save you a lot of money and stress later.

1. What size heat pump do I actually need?

Bigger isn’t always better.If the unit is too small, it’ll struggle to heat or cool your space. Too big, and it’ll cycle on and off all the time — wasting power and wearing out faster.

Ask your installer to explain how they sized it. Did they check your room size, insulation, and window type? A good installer can show you the numbers, not just guess.

2. Is my switchboard ready for it?

New builds often include spare space on the switchboard - older homes usually don’t. Adding a heat pump means adding electrical load, so you might need a circuit upgrade or RCD protection.

If you’re already re-wiring or adding other things like a spa, oven, or EV charger, plan it together. It’s cheaper and cleaner to do it once rather than open the wall twice.

3. What’s included in the quote (and what’s not)?

A clear quote should list:

• Supply and install of the heat pump

• All cabling, piping, and brackets

• Commissioning and testing

• Warranties included

• Electrical connection and safety certification

Watch out for quotes that say “install only” - that might mean no materials, no electrical work, or no warranty on the full job.

Ask: “If I just pay what’s on this quote, will the job be 100% finished and working?”If the answer isn’t a straight yes, get it written down.

4. Where will the outdoor unit go?

This one’s easy to miss.The outdoor unit needs good airflow, low noise, and safe access for servicing.

If you’re by the coast, it also needs protection from salt air. If it’s under a deck or beside a bedroom, think about vibration and noise.

A good installer will show you the best spot and explain why. Don’t just accept “we’ll put it there.”

5. What warranty do I get — and who helps if there’s a problem?

Most brands offer 5-6 years on parts, but the real test is who helps when something goes wrong.

Ask:

• “Who handles the warranty claim - you or the manufacturer?”

• “Do you offer your own workmanship guarantee?”

At Swiss AC, we back every install with a 5-year workmanship guarantee and full support. You shouldn’t have to chase three different companies if your unit ever stops working.

6. What’s the plan for servicing?

Like a car, your heat pump needs a check-up every year. This keeps it clean, quiet, and running efficiently.

Ask if your installer offers ongoing servicing or reminders - or if you’ll need to find someone else later. You’ll thank yourself when the next power bill comes in lower.

7. Can you show me past work or reviews?

Good installers are proud to show their work. Check Google reviews, photos, or even ask for a reference. If someone avoids showing proof, that’s a red flag.

8. How soon can it be installed and how tidy is the process?

Timing matters during a build or reno. Ask how they’ll work around your builder or painter, and if they’ll leave the site clean.

Professional installers coordinate with other trades and keep communication easy you should never feel left in the dark.

Final tip: Don’t just go for the cheapest quote

The cheapest quote often leaves out small but important details like cable size, circuit upgrades, or refrigerant recovery. Those can turn into big “extras” later.

A good quote should feel clear, honest, and complete even if it’s a few dollars more. That’s the one that usually saves you time, money, and headaches.