If you’ve spent another Canterbury winter trying to heat one room while the rest of the house feels like a fridge, you’re probably wondering what you can actually do about it.
The good news is that you don’t necessarily need a complete renovation.
There are plenty of ways to improve the warmth, comfort and efficiency of an existing Christchurch home — and the best approach is usually to work out where your home is losing heat before spending money on upgrades.What's the best way to make an older Christchurch home warmer?
Start with the basics.
Think about your home’s thermal envelope — the ceiling, walls, floor, windows and doors that separate your heated living space from the outside.
If one part is performing poorly, your heating system has to work harder to compensate.
EECA recommends checking existing insulation and improving it where necessary, particularly in older homes.
For many homeowners, insulation is a sensible place to start.
Is insulation worth upgrading?
For many homes, yes.
Insulation helps slow the movement of heat between inside and outside, making it easier to maintain a comfortable temperature.
EECA says insulation is one of the most effective ways to keep a home comfortable, warm and energy efficient, and estimates potential savings of up to $330 a year on power bills.
But don’t assume your insulation is still performing as it should simply because your house has insulation.
Older insulation can be damaged, compressed, displaced or incomplete.
A professional assessment can help determine what you actually need.
Is double glazing worth it?
Windows are one of the areas where homeowners often notice a significant difference in comfort.
Older single-glazed windows can contribute to heat loss and condensation.
Upgrading glazing or joinery can improve thermal performance, reduce draughts and make rooms feel more comfortable.
However, it’s worth considering your whole home rather than assuming windows are automatically the first thing to replace.
If your ceiling and floor insulation are inadequate, for example, there may be more cost-effective improvements to make first.
Do I need a heat pump?
A heat pump can be an efficient way to heat and cool a home, but the right system depends on the house and how you use it.
Think about:
- The size of the space
- Open-plan versus separate rooms
- Insulation levels
- Where the unit can be installed
- How many rooms you need to heat
- Whether you want cooling in summer
- Your existing heating system
Good heating advice starts with the house — not simply the product.
What about heat-pump hot water?
Hot water can be a significant part of household energy use, so it’s another area worth investigating when you’re looking at whole-home efficiency.
Heat-pump hot water systems can use significantly less electricity than conventional electric hot-water systems, although suitability depends on the home, existing system and installation requirements.
If your hot-water cylinder is already nearing the end of its life, it may be worth investigating your options before simply replacing it like-for-like.
Should I consider solar power?
Solar has become an increasingly interesting option for homeowners looking at longer-term energy costs.
But again, the answer isn’t simply “put solar on the roof”.
Think about:
- How much electricity your household uses
- When you use the most electricity
- Your roof orientation
- Available roof space
- Whether you want battery storage
- Your future electricity needs
A professional assessment can help determine whether solar makes sense for your household.
What about ventilation and condensation?
A warmer house isn’t necessarily a healthier house if moisture isn’t managed properly.
Cooking, showering, drying clothes and simply living in a home all create moisture.
Good ventilation helps remove that moisture before it becomes condensation and contributes to dampness or mould.
If you regularly see condensation on windows, notice musty smells or have persistent damp areas, don’t simply keep turning up the heater.
Find out where the moisture is coming from and how it is being removed.
What should I upgrade first?
There’s no universal order for every house.
A sensible starting point is to identify the biggest problems.
Ask:
Where is my home losing heat?
Where is moisture building up?
Which rooms are uncomfortable?
Which systems are expensive to run?
What is already reaching the end of its life?
Then build a staged plan.
You might discover that upgrading insulation first makes more sense than replacing windows.
Or that improving heating makes more sense once insulation has been addressed.
Or that your old hot-water system is the upgrade worth investigating first.
Think beyond one product
One of the most interesting Christchurch renovation projects featured in the 2026 Superhome Bus Tour demonstrates how a home can be improved by addressing several problems together.
The Papanui renovation tackled poor insulation, inefficient joinery, expensive running costs and noise, alongside improvements including a sunroom, upgraded windows, heat-pump hot water, solar, battery storage, mechanical ventilation and insulation upgrades.
The result was described as warmer, quieter, lighter and more comfortable.
The lesson isn’t that every Christchurch home needs the same list of upgrades.
It’s that the best renovation plans consider how the different parts of a house work together.
The Canterbury Home Show is a good place to start
If you’re trying to work out what your home actually needs, talking to several specialists can be incredibly useful.
Instead of researching heating, insulation, windows, solar, ventilation and building separately, you can compare ideas and ask questions in person.
Bring photos of your home.
Bring measurements if you have them.
Know roughly what you’re hoping to achieve and what your budget might be.
And most importantly, don’t be afraid to ask:
“If this was your home, what would you do first?”
You may get a very different answer from what you expected — and that’s exactly why expert conversations are valuable.
Visit the Canterbury Home Show at Wolfbrook Arena, Christchurch, from 16–18 October 2026, and start turning your home’s comfort wish list into a practical plan.
