We provide 24 hour emergency service for all of your plumbing, heating and cooling needs pleaseâ â. Another combi boiler benefit is that it can generally save you money on installation time and costs, since no tank in the roof space means less pipe work and a shorter installation time. Alternatively you can call us on. From mosaic tiles to amazing spaces, we write about all that we love. We also shared our findings with the gas safe register and the hse (which.