For all your heating and cooling needs, call or contact us today! If your pressure is dropping quickly in your boiler and you want to play it safe, you can turn off the water using the mains stopcock. Very good service throughout both technicians were fantastic! we would happily recommend halsalls to friends and family thank you! June -, , new york city, new york. Green people natural edelweiss sun lotion spf with tan accelerator. What's the cost of replacing your boiler?.