Every repair includes a gas safety check. The exact price you should expect to pay is difficult to predict as the costs vary greatly the different models available each have their own price add the fact that each supplier and installer will also differ on their costs makes it even more difficult. If you have had any experience with the baxi ecogen boiler and would like to share it with people looking to invest in a new boiler, then the microchp section of our. If your appliance is not listed. We.