Hen harold stern's kitchen drain became blocked he did what many of us would do and called in his trusted local builder when that builder couldn't shift the offending item and with the drain now overflowing, stern turned to the yellow pages. We are fully insured heating and cooling professionals! Did you find this review helpful? Quality at your doorstep! able to carry out any works of improvement on your home multi-skilled. I had appliance guys over to re-do my dryer vent.