GV Hydronic Heating

07/06/2026

We attended a 3 year old Floor Heating installation on a high quality home that was not working. After the customer was blocked by the original hydronic company we were contacted.

The heat pump was cycling on and off every 3-5 minutes. The wall thermostat was set to 26c and was struggling to reach 20c.

We found a huge 300w primary pump in the Monoblock heat pump and a tiny 30w secondary pump to feed the 14 internal floor circuits with an uncontrolled bypass loop.

This way out of balance pump fight would never work. Hydraulic separation like this is not necessary on slab floor heating and also increases costs and reduces efficiency. A concrete slab is a fantastic thermal battery.

We removed the small secondary pump and the bypass loop.

System was finally running perfectly when we departed with a return temperature delta of 5c. 3 years of inefficiency was solved in 3 hours. 

No interest in naming the company that installed it.

03/06/2026

I take full responsibility for the incident.

The trailer was equipped with a substantial 400kg 50kw wood boiler, and I mistakenly assumed that
my “A/T” All Terrain tyres would do there job. It appears the tyres capabilities were overstated.

Fortunately our customer was available to get us out of the stuck situation.

Many thanks to our customer Bec.🤷🏻‍♂️😀

22/05/2026

22/05/2026

It was a great week. Lots of service work to start with fixing a few problems from other companies that don’t care about efficiency at all or simply don’t know what they are doing.

After that we started and completed one of our correctly designed installations in Benalla. The customer previously used plug in “100% efficient” K-Mart type panel resistance heaters. 100% efficient regarding electric resistance heating is the same as a bread toaster.

We installed a new Air to Water Heat Pump to wall mounted radiators that will increase efficiency by an average of 400%.

We also set the weather compensation to automatically raise the water temperature when the outside temperature is low.

After 30 years of installing Hydronic Heating it is still amazing to me how efficient using water to heat almost anything can be.

Mechanical products provided by;

All Pipework supplied by;

Electrical work completed by;

13/05/2026

A new efficiency upgrade of a old 70% efficient gas boiler to a 95% efficient unit. Service work and our new dog Otis is now finally best friends with 8 year old Atlas.

30/04/2026

A total re-pipe of an old 12 radiator system was completed today near Seymour.

We have improved from the old copper pipework by using the full flow system that expands the MLCP pipe at all pipe connections so internal pipe friction is reduced. A single 26mm multi layer composite pipe (MLCP) can carry 30kw+ of energy no problem.

More efficiency with negligible thermal losses.

22/04/2026

Paper wasps are a pain. Even if they get fully toasted when the cold nights arrive.

Flue obstruction removed.
System running 100% on departure.







21/04/2026

Sometimes bashing a blocked radiator with a rubber mallet only does so much. This radiator will need to be removed and flushed. Not a big job when we return.

This system is well over 20 years old and has worked great with very little maintenance costs so far.

- Hydronic heating is the most Efficient heating system available. With the added benefits of being silent, hypoallergenic and being more comfortable in your home as a bonus.

16/04/2026

We upgraded our thermal camera product last week. It is twice as accurate with a higher refresh rate.

It’s great to see the low flow temperatures of the floor coils working so efficiently and so quickly.

This system was only running for 1 hour from cold and was easy to see the heating coils. 👍🏼

12/12/2025

2 X heat pump fit off was started today in Avenal. We had 2 enclosures to mount the Heat Pump system controllers separately but after a bit of measuring I decided to fit them into one enclosure instead when i got home. It will look much nicer. We will finish it off on Monday.

A 35kw wood boiler was installed in a Tallarook renovation yesterday. This system will have a wifi enabled LPG condensing boiler to pre heat the house before the customer arrives, once they arrive they can light the wood boiler. Once the wood boiler reaches temperature it will automatically turn off the gas unit and run 100% on the wood boiler.

And our new dog mates are getting along just fine… 😀