No plant room? No problem. Get big performance in a small footprint
No plant room? No problem. Get big performance in a small footprint
In many commercial sites, space is often a deciding factor when choosing the right heating system, especially during renovations or in urban developments where plant room space is limited.
- Blog
- End customer - Investor
But when it comes to heating performance, you shouldn’t have to compromise. That’s where Hoval’s TopGas Max comes in.
This compact, wall-mounted gas condensing boiler delivers big output in a small footprint, making it the ideal solution for buildings where space is tight but performance is non-negotiable.
Designed for tight spaces
The TopGas Max is wall-mounted and compact by design, freeing up valuable floor space and making it an excellent choice for refurbishing older boiler rooms or integrating into modern, minimalist plant layouts.
With outputs from 50 to 150 kW, and scalable to 500 kW via cascade systems, this boiler brings serious heating power in a small package.
Perfect for renovations and retrofits
Renovating an older building? Need to upgrade without expanding the plant room? The TopGas Max is purpose-built for these scenarios. Its lightweight, modular construction allows for easy transport, installation, and integration into existing systems, no structural overhauls needed.
And with low noise levels (just 51–53 dB(A)), it can be installed closer to occupied spaces without disrupting comfort.
Compact, yet capable
Despite its size, the TopGas Max doesn’t hold back on performance:
Up to 108.2% efficiency at part load
Smart modulation from 20% to 100% output
Compatible with natural gas, propane, and 100% biomethane
Hydrogen-ready (up to 20% H₂ blend)
It’s even ready for hybrid system integration, supporting up to 80% renewable energy when combined with a heat pump.
Flexible design, maximum value
In today’s construction landscape, adaptability is key. The TopGas Max offers the high-performance heating your building needs, in a form factor that fits where others can’t.
When space is limited, you no longer need to scale back your heating ambitions.
