You deserve the best

Effecient & High Quality

We carry only tested and proven products by brands known for delivering the results you're expecting.

American Standard
Heat Pumps

Cool, crisp air in the summer. Gentle, welcoming heat in the winter. Reliability and efficiency every day of the year.

Variable Speed Systems

American Standard Heating & Air Conditioning systems offer precise home comfort at a lower cost of operation

American Standard

Connect your home to and get energy management control from wherever you are, right at your fingertips.

American Standard
S-Series Furnace

American Standard craftsmanship ensures that every gas furnace we make is built to exacting levels of performance.

American Standard
Air Handlers

It’s our goal to deliver the utmost in comfort and efficiency to you and your family.

On Demand Hot Water

With Navien Condensing on demand hot water, you get the best of both worlds : The Best Value and Ultra Condensing Efficiency, which offers fantastic savings and contributes to a green-friendly environment

NPE Series

The ultimate hot water solution. All the hot water you need, for as long as you need it. Lower energy bills and environmentally friendly.

H2Air DHW System

Designed for both retrofit and new construction residential applications, Navien’s H2Air Kit allows for forced-air space heating and DHW system integration between NPE-A Series tankless water heater models and a hydronic air handler

17 Series Single-Zone

17 Series single-zone inverter wall-mounted systems provide energy efficiency and comfort control with an affordable, cost-saving solution.

19 Series

19 Series Wall Mount Systems provide energy efficiency and comfort control with an affordable, cost-saving solution. 

Vista™ FFQ-Q Multi-Zone

A remarkable blend of iconic design and engineering excellence with an elegant white or a silver and white finish.

SkyAir Series

 The Daikin Inverter Ducted Heat Pump line is a cost‐effective alternative to traditional high efficiency gas furnace/AC systems.

MXS Series Multi-Zone

Ideal for multi-room applications desiring individual room comfort in a space-saving design.

LV Series Single Zone

A feature-packed, and refined, wall-mounted system that includes an intelligent eye for energy savings and horizontal and vertical auto swing outlet fins for 3-D airflow comfort.

Intelligent Thermostat

Ready to help you achieve control, energy efficiency and long-term peace of mind.

Why Us

We Pride Ourselves in the Quality of Our Work

Expert Installers For The South Island

Rest easy knowing that Sub Zero is on the job. With hundreds of satisfied customers, whether you need an install, upkeep, or a quick fix, we know you’ll be happy with the results of our work. If there’s anything that we miss, we will working with you to ensure it’s made right, that’s just how we work. 

Book Your Service

Reach out to us here and we will get back to you as soon as we can.

Start Saving Money NOW!

There’s no need to putting off a more Energy Efficient, Cost Effective home comfort system.