ACV HeatMaster TC Evo 25–45kW Condensing Boiler with Hot Water

ACV HeatMaster TC Evo

The ACV HeatMaster TC Evo 25–45kW is a high-efficiency condensing gas boiler with integrated domestic hot-water production, designed for residential, commercial and high-demand heating applications.

The range includes the HeatMaster 25 TC Evo, HeatMaster 35 TC Evo and HeatMaster 45 TC Evo, giving installers a choice of three heating outputs while retaining ACV’s Tank-in-Tank hot-water technology.

Unlike a conventional heating-only boiler, the HeatMaster TC Evo combines central heating and domestic hot-water production within one floor-standing appliance. This makes it a practical solution for properties that require both space heating and a substantial domestic hot-water supply.

ACV Tank-in-Tank Technology

The HeatMaster TC Evo uses ACV’s proven Tank-in-Tank technology.

Each model incorporates:

• 196 litres total capacity
• 100 litres primary heating capacity
• 96 litres domestic hot-water capacity
• Stainless-steel domestic hot-water tank
• Stainless-steel heat exchanger

The domestic hot-water tank is positioned inside the primary heating tank, providing a large heat-transfer surface and allowing the appliance to recover hot water efficiently.

ACV’s documentation states that the stainless-steel domestic hot-water tank does not require an anode protection system, helping simplify maintenance.

25kW, 35kW and 45kW Models

The HeatMaster TC Evo is available in three main output sizes.

HeatMaster 25 TC Evo

The 25 TC Evo has:

• 25.0kW maximum input on an LCV basis
• 24.3kW useful output at 80/60°C
• 26.0kW useful output at 50/30°C
• 5.0kW minimum input
• 196L total capacity
• 96L domestic hot-water capacity

HeatMaster 35 TC Evo

The 35 TC Evo provides:

• 35.0kW maximum input on an LCV basis
• 34.1kW useful output at 80/60°C
• 36.4kW useful output at 50/30°C
• 7.0kW minimum input
• 196L total capacity
• 96L domestic hot-water capacity

HeatMaster 45 TC Evo

The 45 TC Evo provides:

• 45.0kW maximum input on an LCV basis
• 44.1kW useful output at 80/60°C
• 46.8kW useful output at 50/30°C
• 9.0kW minimum input
• 196L total capacity
• 96L domestic hot-water capacity

ACV’s current product documentation confirms the 25, 35 and 45 TC Evo output range and corresponding technical characteristics.

Efficient Condensing Operation

The HeatMaster TC Evo uses a modulating premix gas burner and condensing heat exchanger technology.

At 30% load, ACV specifies efficiency of approximately:

• 108.9% for the 25 TC Evo
• 109.5% for the 35 TC Evo
• 109.0% for the 45 TC Evo

These values are based on the relevant condensing test methodology and should not be interpreted as a simple fuel-to-heat percentage under every operating condition.

The appliances also achieve NOx Class 6, supporting lower-emission combustion performance.

Domestic Hot-Water Performance

The integrated Tank-in-Tank system allows the HeatMaster TC Evo to provide domestic hot water while also serving the heating system.

ACV specifies the following performance at 40°C:

These figures are manufacturer’s test values and actual performance will depend on incoming water temperature, operating conditions and system design.

Fast Hot-Water Recovery

The HeatMaster TC Evo is designed to recover its hot-water storage quickly.

ACV specifies heating times from 40°C to 80°C of approximately:

• 22 minutes for the 25 TC Evo
• 22 minutes for the 35 TC Evo
• 16 minutes for the 45 TC Evo

Heating time from 40°C to 90°C is approximately 30, 28 and 25 minutes respectively.

This recovery capability makes the range suitable for properties where hot-water demand can fluctuate throughout the day.

Stainless-Steel Construction

The HeatMaster TC Evo uses a stainless-steel heat exchanger and stainless-steel domestic hot-water tank.

Benefits of the stainless-steel construction include:

• Strong corrosion resistance
• Long-term durability
• Reduced maintenance requirements
• No conventional DHW anode requirement
• Large heat-transfer surface

ACVMax Touch Control

The HeatMaster TC Evo incorporates ACV’s ACVMax Touch control system.

The control system provides a user interface for monitoring and managing appliance operation, while the modulating premix burner adjusts combustion according to demand.

The appliance also incorporates a high-efficiency circulator pump and integrated safety/control components.

Natural Gas and Propane

The HeatMaster TC Evo range can be configured for natural gas and propane, depending on the specific product version.

ACV’s documentation identifies natural gas and propane configurations for the range. The exact gas type, product reference and conversion requirements should always be confirmed before ordering.

Heating and Domestic Hot Water in One Appliance

One of the main advantages of the HeatMaster TC Evo is that it combines:

Central heating + domestic hot-water production

in a single floor-standing appliance.

This can simplify system design compared with installing separate heating and hot-water equipment, depending on the project requirements.

The appliance can be considered for:

• Large homes
• Apartment buildings
• Hotels
• Care homes
• Restaurants
• Commercial properties
• Schools
• Healthcare facilities
• Other buildings requiring both heating and substantial DHW production

Commercial and High-Demand Applications

The HeatMaster TC Evo is particularly relevant where both space heating and domestic hot-water demand need to be addressed.

Typical applications include:

Hotels and Hospitality

Suitable for properties requiring heating alongside regular hot-water demand from guest rooms and facilities.

Care Homes and Healthcare

Can be considered where reliable heating and hot-water production are required throughout the building.

Restaurants and Commercial Kitchens

The integrated hot-water system can help meet significant DHW demand alongside building heating requirements.

Apartments and Multi-Unit Properties

The range provides several output options to help match different building heating and hot-water requirements.

Large Residential Properties

The HeatMaster TC Evo can provide a combined heating and hot-water solution for larger homes where a standard domestic boiler may not provide sufficient DHW performance.

Flue System

The HeatMaster TC Evo uses an 80/125mm concentric flue connection.

ACV specifies a maximum concentric flue length of approximately 20 metres under the manufacturer’s stated conditions.

The actual permitted flue arrangement depends on the installation configuration, number of bends, terminal arrangement and applicable regulations.

Technical Specifications

The specifications above are based on ACV’s manufacturer documentation. Exact product references and configuration should be checked against the stock variant before ordering.

Why Choose the ACV HeatMaster TC Evo?

The HeatMaster TC Evo provides a combined heating and domestic-hot-water solution with:

• Condensing gas technology
• Tank-in-Tank hot-water production
• 25kW, 35kW and 45kW output options
• 196L total storage capacity
• 96L domestic hot-water capacity
• Stainless-steel construction
• ACVMax Touch controls
• Modulating premix burner
• High domestic hot-water flow
• A-rated heating efficiency
• NOx Class 6 combustion
• Natural gas and propane configurations
• Floor-standing installation
• Rapid hot-water recovery

ACV HeatMaster TC Evo for European Supply

EuroFuelSupply supplies heating, hot-water and energy equipment for supported European markets, serving homeowners, businesses, installers, developers, retailers and wholesale customers.

When ordering the ACV HeatMaster TC Evo, confirm:

• Required output: 25kW, 35kW or 45kW
• Fuel type
• Installation country
• Gas configuration
• Flue requirements
• Quantity
• Delivery destination

For commercial developments, multiple units or wholesale requirements, request a quotation for current availability and pricing.

Installation

The HeatMaster TC Evo is a gas-fired heating appliance and should be installed, commissioned and serviced by an appropriately qualified professional.

The installation must comply with ACV’s current installation documentation and the regulations applicable in the installation country.

Gas supply, flue design, ventilation, condensate drainage, hydraulic connections, system pressure and safety requirements should all be assessed before installation.

Frequently Asked Questions

What is the ACV HeatMaster TC Evo?

The ACV HeatMaster TC Evo is a floor-standing condensing gas boiler that combines central heating with integrated domestic hot-water production using ACV Tank-in-Tank technology.

What models are available?

The range includes the HeatMaster 25 TC Evo, HeatMaster 35 TC Evo and HeatMaster 45 TC Evo.

What is the output of the HeatMaster 25 TC Evo?

The 25 TC Evo has a maximum input of 25kW LCV and a useful output of 24.3kW at 80/60°C.

What is the output of the HeatMaster 35 TC Evo?

The 35 TC Evo has a maximum input of 35kW LCV and a useful output of 34.1kW at 80/60°C.

What is the output of the HeatMaster 45 TC Evo?

The 45 TC Evo has a maximum input of 45kW LCV and a useful output of 44.1kW at 80/60°C.

How much hot water does the HeatMaster TC Evo store?

Each model has 196 litres of total capacity, including 100 litres of primary capacity and 96 litres of domestic hot-water capacity.

Is the HeatMaster TC Evo a combi boiler?

It provides both central heating and domestic hot water in one appliance, but it is more accurately described as a condensing boiler with integrated domestic hot-water production using Tank-in-Tank technology.

What is Tank-in-Tank technology?

Tank-in-Tank technology places the domestic hot-water tank inside the primary heating tank. This provides a large heat-transfer surface and supports rapid hot-water recovery.

Is the HeatMaster TC Evo condensing?

Yes. The HeatMaster TC Evo is a condensing gas boiler. ACV specifies approximately 109% efficiency at 30% load under the relevant test methodology, depending on model.

Can the HeatMaster TC Evo operate on propane?

Yes. ACV documentation identifies natural gas and propane configurations. The exact gas version should be confirmed before ordering.

What is the hot-water output of the 25 TC Evo?

At 40°C, ACV specifies a peak flow of 361 litres over 10 minutes, first-hour flow of 1,018 litres and continuous flow of 788 litres/hour.

What is the hot-water output of the 45 TC Evo?

At 40°C, ACV specifies a peak flow of 451 litres over 10 minutes, first-hour flow of 1,610 litres and continuous flow of 1,390 litres/hour.

Is the HeatMaster TC Evo suitable for commercial buildings?

Yes. The range can be used for suitable commercial, institutional and high-demand residential applications where both space heating and domestic hot water are required.

Does the HeatMaster TC Evo require an anode?

ACV states that the stainless-steel domestic hot-water tank does not require anode protection.

What flue does the HeatMaster TC Evo use?

The 25, 35 and 45 TC Evo models use an 80/125mm concentric flue connection, with ACV specifying a maximum concentric flue length of approximately 20 metres under the stated conditions.

What electrical supply does it require?

The HeatMaster TC Evo uses a 230V / 50Hz electrical supply.

Which HeatMaster TC Evo should I choose?

The correct model should be selected based on the property’s heating load and domestic-hot-water demand. The 25, 35 and 45kW models provide progressively greater heating and hot-water performance.

Can the HeatMaster TC Evo be used for a large house?

Yes, depending on the calculated heating and domestic-hot-water requirements. A qualified heating professional should size the appliance before installation.

Is installation included?

Do not promise installation unless EuroFuelSupply is providing an installation service for the customer’s specific destination. The appliance should be installed and commissioned by a suitably qualified professional.