Onivas Heating specialist

23/02/2026

Aquabion S15 installation 💧✨
This client was struggling with heavy limescale buildup and wanted to know what options were available. The property was a reflective new build, with the mains entering from the roof and looping back on itself 🏡🔧
Another happy homeowner protected from limescale! 💪🚿💙

25/01/2026

**🔥 Boiler Upgrade in Maidenhead 🔥**
We swapped out the old system for a sleek **Intergas Combi** with an external **Robo Kit**.

✅ **Location:** Easy access, but the original flue was too close to the internal corner – so we **core drilled a new flue hole** for perfect placement.
✅ **Teamwork:** Big thanks to Martin and the crew for sealing the flue on the **3rd floor** – not an easy job!
✅ **Pipework tweaks:** Slight adjustments for the new flue setup.
✅ **Smart controls:** Supplied with an **EPH Combi Pack 4**, connected via **OpenTherm** for maximum energy efficiency.

💡 Another job done right – safe, efficient, and future-ready!

👉 **Thinking of upgrading your boiler? Get in touch today for a free quote!**

** MaidenheadPlumber SmartHeating HomeComfort PlumbingLife HeatingEngineer BoilerInstallation EcoFriendlyHeating TeamWorkMakesTheDreamWork**

27/09/2025

A back boiler removal and convert to combination boiler. The client had just brought the property and this was the first on there list.
They got there in just in time, the first few photos show the heat exhanger has rusted and started to leak.

We relocated the boiler to the kitchen, and throughly flushed the heating system.

21/11/2024

Black Friday Alert!

We are turning up the heat with a limited-time offer you don’t want to miss!

Get £200 OFF any boiler installation!

Offer valid from 25th November to 30th November ONLY!

Whether you're upgrading your current system or preparing for the chilly months ahead, now is the perfect time to invest in comfort and efficiency.

Why choose Onivas Heating Specialists?
- Expert Installation
- Trusted Professionals
- Top-Quality Boilers

Don’t let this deal go cold! Call us today or book your installation before the deadline to secure your savings.

Contact us now at 07507 799565 or visit our website at https://onivas.co.uk/.

Your comfort, our priority. Let’s keep you warm this winter!

We provide all aspects Heating specialists in Reading. Request a free quote by contacting us today.

07/05/2024

Had a combi boiler replacement.
Had an old ferroli boiler with a few issues. The client who had just brought the property wanted a boiler with a 12 year warranty.

Installed an intergas xclusive, the boiler comes with 10 years as standard but then you install their filter gives you an extra 2 years.

Installed a combimate to prevent any build up of limescale.

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20/02/2024

Vaillant ecotec plus boiler service..
It was the first time in 9 years this boiler had been taken apart.
This has had a couple of reapirs done to it. It's had a new pressure sensor and expansion vessel just before Christmas.

18/01/2024

Vaillant boiler service.
Got here just in time. The condensate pipe was frozen on the outside and was starting to drip inside just under the boiler.

Burner was removed, heat ex cleaned, electrodes checked new gaskets.

05/01/2024

Had a little cylinder swap. Gledhill system mate out and an unvented installed.

Immersion heater was all rusted, which prompted the exchange, was only when I got the old unit out, I saw how bad it was. Wasn't any water on the floor.
Lagged as much of the pipework as possible to meet with building regs.

18/10/2023

A little before and after!
The client has an extension in the pipeline so we needed to move the boiler to relocate the flue.

Baxi 613 was the perfect option as the client wasn't too keen on having a cable run to the airing cupboard..

29/06/2023

A little before and after.
An old viessmann 200w replaced with a new viessmann 100w range.

The customers had to get a repair done every year, to keep the old girl running. They went with the new 100w range with 12 years manufactures warranty for peace of mind.

This boiler was connected with the 4 pipe system (priority hot water) and weather comp.