Electrical, Plumbing, Heating & Cooling Company; Serving Montgomery, Berks and Chester Counties. Keep all systems running smoothly with electrical,plumbing, heating and cooling services from D.P. Marlatt & Son. Proudly serving the Limerick and surrounding areas, our family-owned electrical, plumbing, heating and cooling company provides prompt and professional service and repair when you need it most. Backed by 30 years of experience, you can rely on our team for prompt and dependable work. Whether you need electrical, plumbing, heating or cooling services we are here to serve you.