Replacement high-wall heat pumps
Replacing ageing or unreliable wall-mounted units with current Mitsubishi Electric models, correctly sized for the room.
Replacement & Upgrade Specialist
Heat Pump Replacement & Upgrades Christchurch
From replacing a single high-wall unit to upgrading an entire home to ducted whole-home comfort.
Replacement & Upgrades
Is your current heat pump really doing the job?
Many Canterbury homes are heated by systems that were never properly designed for the space — or that have simply reached the end of their useful life. Replacing a heat pump is an opportunity to fix the underlying comfort problem, not just swap the box on the wall.
Heat Pump Upgrade Co specialises in replacing and upgrading existing heat pumps. We do more than swap the unit — we assess its sizing, placement, pipework, drainage and electrical supply. For ducted systems, we also review the existing ductwork before designing the upgrade.
Common Signs
Reasons homeowners upgrade
If any of these sound familiar, it may be time to look at a properly designed replacement or upgrade.
- →Rooms that never reach temperature
- →Excessive noise from older units
- →Poor or uneven airflow
- →High energy consumption
- →Ageing or unreliable equipment
- →Uneven temperatures across the home
- →Several wall units cluttering the home
- →Poorly designed existing ductwork
- →Renovations or changing how the home is used
- →Wanting true whole-home heating and cooling
What We Replace & Upgrade
From single units to whole-home systems
Replacement floor consoles
Upgrading older floor-mounted units with modern, efficient alternatives.
Replacing older inefficient systems
Removing systems that cost more to run than they should and replacing them with properly sized equipment.
Upgrading existing ducted systems
Replacing the indoor or outdoor unit of an existing ducted system — and reviewing the ductwork it connects to.
Redesigning poor ductwork
Fixing airflow problems caused by undersized, poorly routed or badly supported ductwork from a previous installation.
Moving from wall units to ducted
Upgrading homes from several individual wall-mounted units to a single, discreet, whole-home ducted system.
The Ductwork Review
We don't just connect a new unit to old ductwork
When replacing an existing ducted heat pump, we review the existing duct system rather than automatically connecting a new unit to poorly designed ductwork. In many cases, the duct design is what actually needs upgrading to deliver the comfort you expect.
Single room replacement
Replacing just one high wall unit or floor console? Explore our individual room solutions.
Another upgrade path
Upgrading from several wall units? A Mitsubishi Electric multi-room system could be the right alternative to ducted.
Recent Project · Redwood
See our Redwood ducted heat pump replacement project — a two-storey home upgraded from ageing wall units to a Mitsubishi Electric ducted system.
Recent Project · Riccarton
See our Riccarton villa ducted heat pump replacement project — an older home with 3.3 m ceilings upgraded from four split units to two independent ducted systems.
Frequently Asked Questions
Common questions about heat pump replacement
How long does a high-wall heat pump replacement take?→
A standard high-wall heat pump replacement usually takes a few hours.
What is included in my installation quote?→
Your quote includes everything required for the agreed installation, including old-system removal where applicable, electrical work, commissioning, controller setup and clean-up. All electrical work is carried out by a registered electrical contractor. The price changes only if you change the agreed specification.
Will you show me how to use the system?→
Yes. At handover, we give you a full explanation of how your system and controls work, including how to clean the filters. We also advise when your system is due for servicing.
What support is available after installation?→
If you have questions about your system, you can call Daniel directly. If he is unavailable, he will return your call as soon as he can. Our installations are backed by a five-year workmanship warranty.
Can you replace an existing ducted heat pump?→
Yes — and we also review the existing duct system rather than automatically connecting a new unit to poorly designed ductwork. In many cases upgrading the duct design is what actually fixes the comfort problem.
What brand of heat pump does Heat Pump Upgrade Co install?→
Mitsubishi Electric exclusively. We've chosen to specialise rather than offer numerous competing brands, so we can deliver deeper expertise and better long-term support.
Ready to upgrade?
Whether you're replacing a single unit or upgrading to a whole-home ducted system, we'll review what you have and design the right path forward.