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Valvecosy | Hot Water Insulating Cover

Valvecosy | Hot Water Insulating Cover

House & Garden

The Smart Choice for Insulating Hot Water Valves

Regular price $28.00
Regular price Sale price $28.00
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Tax included. Shipping calculated at checkout.
  • Industry Leading
  • Quality Assured
  • Australian Designed
  • Step-by-Step Videos
  • Ships within 2 business days


ValveCosy is an innovative product designed to insulate the valve on your hot water storage tank, enhancing the efficiency of your home's hot water system. By insulating this often overlooked part of the hot water system, ValveCosy prevents heat loss, leading to reduced energy consumption and lower utility bills. Made in Australia, it reflects ecoMaster's commitment to sustainable and practical home solutions.

ValveCosy is not only easy to install but also serves as a cost-effective upgrade to your home. It ensures that the heat stays where it's needed, inside the tank, thereby enhancing the overall efficiency of the hot water system. This simple yet effective measure is particularly beneficial during colder months when heat loss can be more significant. By choosing ValveCosy, homeowners make a small but impactful step towards reducing their carbon footprint and contributing to environmental sustainability.

The Valvecosy™ Insulating Cover is fitted on your hot water service valve. It helps you save energy and money by reducing heat loss from your water heat tank via your Pressure Temperature Relief (PTR) valve. 

Independent laboratory testing indicated that the installation of a Valve Cosy resulted in a 5.6% reduction in heat loss. This provides a very rapid pay-back period on your investment.

This easy-to-fit cover is designed to fit neatly over your valve. Valvecosy™ can be clipped easily in a matter of seconds and does not require any tools for installation.

Many variables influence the amount of heat and thus energy loss from a PTR valve. There are so many bonuses to using it! It can reduce heat loss, conserve energy, save money, and more.



  • Specifically designed to insulate the valve on hot water storage tanks.
  • Reduces heat loss from the valve, improving overall system efficiency, saving you money on hot water heating.
  • Australian made - locally produced, ensuring quality and supporting the Australian ingenuity
  • Very easy to Install and easy to remove if you need to inspect the valve
  • Covers auxiliary relief valve, if there is a leak water it is directed downward


  • Cost Savings - reduced heat loss leads to lower energy bills

Suitable For:

  • Most Pressure and Temperature Relief Valves (PTR)


Fits on common PTR valves with drain lines of 12mm - 19mm


Tank Model Tested

Valve Cozy 191050F5

Measured Static Volume (L) 52.8
Rated Static Volume (L) 53
Measured Standing Heat Loss (kWh / 24h) with PTR insulation 1.70
Measured Standing Heat Loss (kWh / 24h) without PTR insulation 1.80
Percentage improvement in heat loss due to PTR valve cozy 5.6%


Very easy

How To

How To: 

Installing your ValveCosy is very simple. 
* Simply position the ValveCosy over your PTR valve
* Push the two halves together
* Wait for the satisfying 'Click'

How To Video Guide:



Q: What is ValveCosy and how does it improve my hot water system? A: ValveCosy is a product designed to insulate the valve on hot water storage tanks, enhancing system efficiency and reducing heat loss.

Q: How easy is it to install ValveCosy?
A: ValveCosy is very user-friendly, designed for easy installation and removal for valve inspections.

Q: Is ValveCosy suitable for all hot water systems?
A: It fits most Pressure and Temperature Relief Valves (PTR), making it versatile for various hot water systems.

Q: How does ValveCosy help in saving costs?
A: By insulating the valve and reducing heat loss, it leads to lower energy bills, offering significant cost savings.

Q: Is ValveCosy an environmentally friendly option?
A: Yes, besides being Australian-made, its function of reducing energy consumption makes it an eco-friendly choice.


Q: Can I collect my order?
A: Yes you can!  A “Ready for Pickup” email will be sent to you when you order is ready to be collected. 
Please click this link for the Click and Collect details. Note:  this Collection Centre is in Preston in Victoria, NOT Prestons in NSW. 

Q: When will my order be despatched?
A:  Generally, your order will be despatched within 1 to 2 business days.    

Q: How will my order be delivered?
A:  If this is the only product in your order, it will be delivered by Australia Post.  

Q: Will my order be tracked?
A:  Yes!  When your order is consigned, you will receive a tracking number that will show you where your order is and its expected delivery date. 
Track your order here
Please note: Orders with two or more items may arrive in separate parcels with no additional shipping charge

Q: When will my order be delivered?
A: All AusPost orders are picked, packed and despatched within 2 business days.  Our experience with AusPost indicates that your order will be delivered within 2 - 5 business days.  Clearly this will fluctuate at peak shipping times such as Christmas.

Q: What happens if my order gets lost during transit?
A: On rare occasions we have had orders go missing. ecoMaster has solid procedures in place and photograph every order that leaves our warehouse.  The delivery of our orders at the local post office are videoed and we track the progress of orders.  If a delivery date appears to be beyond expectation, we will raise a query with AusPost on your behalf.  If your order cannot be found during transit, we will send a replacement.  

Q: What happens if my order is stolen after delivery?
A: We will check with AusPost to ensure that the order was delivered to the correct address.  If that is confirmed, and your order has been stolen from your home after delivery, please raise a Police report.


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Customer Reviews

Based on 6 reviews
Nigel Murray
Valvecosy improvements

I ordered a Valvecosy from the EcoMaster and it came promptly in the mail. Only one colour was available: Dune. Same colour as my house. Lucky!
The device was easy to attach to the TPR valve on my HWS but seems a bit loose-fitting around the connection from the HWS. Perhaps some different sized foam inserts included in the pack would give it a better fit to different installations.
The two halves come completely apart which makes it easy to fit but it might be even easier if the halves were hinged in a clamshell arrangement (not so easy to drop one half).
I found the copper pipe draining my TPR valve also stays warm so it is obviously losing energy too and I have covered it in foam lagging. It might be helpful to offer this in a "Customers who bought Valvecosy also bought ..." type offer.
I have a heat pump HWS running off solar energy so the energy I save only costs me the Feed In Tariff. On this basis it might take me fifty years to re-coup my outlay. If I could pick up a Valvecosy in a hardware store for $10 it would be a no-brainer. Give one to each family member. But for $28 plus $11 shipping it's a feel-good indulgence.
Valvecosy is a great idea. It’s just too expensive.

Hi Nigel

Thank you for sharing your review.
So awesome to hear that the colour matched your home too!
We appreciate your comments and will certainly pass on your suggested improvements to the manufacturer.

Valvecosy was tested in 2019 to determine heat loss. The percentage of improvement of heat loss due to Valvecosy was 5.6%.
A 5.6% savings on the energy loss from the tank would pay back that investment faster than one might anticipate.

Thanks again for sharing your thoughts. Have a great day!



Thank you for sharing your review! The team here at ecoMaster appreciate your time!

Wayne G.
Very Cosy

Excellent product. Good quality and easy to fit.

Thanks for the feedback Wayne!

Darryl J.
Great Aussie made product

Great product and very easy to install

Thanks for the feedback Darryl!

Jennifer D.


Thanks for the feedback Jennifer!