Get Your Heat Pump Serviced Before Summer Hits
After a long Canterbury winter of near-constant use, many Christchurch heat pumps are tired, dusty and due some attention. With hot, dry nor’westers on the way, now is the time to get yours checked, before the first 30-degree day.
For most Christchurch households, the heat pump is the main source of warmth. Rules limiting older wood burners, plus the city’s cold, frosty mornings, mean many units run for hours every day from May to September. That is a lot of air passing through filters and coils, and it takes a toll.
Why service in spring?
Most people think about their heat pump when the weather turns cold. But a heat pump that worked hard all winter is often carrying a season’s worth of dust, lint and pet hair, and summer is when it switches to cooling mode.
A dirty unit has to work harder to move the same amount of air. That means higher power bills, weaker cooling and more strain on the compressor, which is the most expensive part to replace. A spring service clears out the winter build-up and catches small problems before peak season, when installers get busy and wait times stretch out.
What a proper service involves
A professional service goes well beyond rinsing the filters. A good technician will typically:
- Clean or replace the filters and check the indoor coil
- Clean the indoor fan barrel, where mould and grime tend to build up
- Clear the condensate drain so water does not back up and leak indoors
- Inspect the outdoor unit, clearing leaves, debris and anything blocking airflow
- Check electrical connections and overall operation in both heating and cooling modes
- Look for signs of refrigerant problems, which only a qualified technician should handle
Ask what is included before you book. A “service” from one company can mean a full strip-down clean, while another may only do a quick filter wash.
Signs your heat pump needs attention now
Some problems should not wait for a routine service. Get your unit checked if you notice:
- A musty or sour smell when it starts up
- Water dripping from the indoor unit
- Rattling, grinding or unusual noises
- Weak airflow, even on a high setting
- A noticeable jump in your power bill without a change in use
- The unit struggling to reach the set temperature
Running a struggling heat pump harder rarely fixes anything. It usually turns a small repair into a big one.
What you can do yourself
Between professional services, there are a few simple jobs any homeowner can do. Most manufacturers recommend cleaning the indoor filters regularly, often every few weeks during heavy use. Gently vacuum or rinse them, let them dry completely, and refit them. Outside, keep the area around the outdoor unit clear of plants, leaves and garden clutter so it can breathe.
Leave anything involving covers, electrical parts or refrigerant to the professionals. Doing it yourself can also put your warranty at risk, as many manufacturers require regular professional servicing to keep it valid.
Choosing who to call
Not every heat pump business does everything well. Some specialise in particular brands, some focus on new installs, and others offer ongoing maintenance contracts. If your unit is still under warranty, check whether the brand requires an authorised service agent.
When comparing options, ask:
- Do they service your brand of heat pump?
- What exactly is included in the service, and what does it cost?
- Will they provide a written report on the unit’s condition?
- Do they offer reminders or a maintenance plan for future years?
Find a trusted installer
TopChoice has researched heat pump businesses across Christchurch and shortlisted five local providers worth considering, from brand specialists to companies offering ongoing servicing and warranty support. See the full list at topchoice.co.nz/christchurch/heat-pump-installers.
A quick service now could mean a cooler, cheaper summer, and a heat pump that is ready to go when winter comes back around.