Frequently Asked Questions

We are specialists in the proactive cleaning and maintenance for all of your home's essential energy systems, including heat pumps (all types), ventilation systems (HRV/ERV), solar panels, and exhaust fans.

You can book online in under a minute. Simply choose your systems, pick a time that suits you, and confirm. You’ll get instant booking confirmation, automatic reminders, and live technician tracking — so you always know exactly when we’ll arrive.

MiHT currently services Auckland and the surrounding areas. We’re expanding soon , check our Locations page or enter your address at checkout to confirm coverage.

Absolutely. Every MiHT technician is fully trained, insured, and background-checked. We use professional cleaning systems and follow industry best practice for every service, no shortcuts, no guesswork.

If you’re not 100% satisfied that your system was professionally cleaned and sanitised, we’ll re-clean it for free , or refund your money.Simple, transparent, and risk-free.

A standard one-off deep clean for a wall-mounted heat pump starts from $149.Our annual MiHT Care™ Plan starts from $299 per year and includes scheduled cleaning, filter replacement, and digital service reporting.All pricing is transparent, upfront, and includes everything — no hidden extras.

It’s your home’s proactive maintenance subscription — one simple plan that keeps every system clean, efficient, and healthy all year.We handle scheduling, reminders, and digital reporting automatically, so you can “set and forget” while your home stays comfortable and your power bills stay low.

Payment is made on completion of your clean via card, or automatically through your plan subscription. You’ll receive a detailed digital invoice and service report after every visit.

Never. All MiHT Care™ Plans are flexible — cancel anytime, no penalties.What you see is exactly what you pay.

Yes — annual servicing pays for itself through lower energy use, better air quality, and longer system life. Dust, mould, and debris build up silently inside your equipment, forcing it to work harder and costing you more.
Your MiHT Care™ Plan automatically schedules this service so you never forget.

Over time, dirt and grime reduce your system’s ability to generate power — often by 15–25%. A professional clean restores full efficiency, helping you get the most from your investment and your sunshine.

A filter change is just one part of a healthy ventilation system. Our full ventilation service is more comprehensive. In addition to replacing the filter, we inspect the fan motor, check for obstructions in the ducting, and clean all ceiling diffusers. This ensures the entire system is working correctly to keep your home dry and your air fresh.

A musty or "sour" smell is a common sign of mould and bacteria buildup on the internal coil and fan of your heat pump. This is not only unpleasant but also circulates unhealthy spores through your home. Our deep clean service is specifically designed to eliminate this by professionally cleaning and sanitising the entire indoor unit, completely removing the source of the odour.