From small repairs to custom new build or renovation plumbing and heating system design and installation. Did you know we also septic pumping AND repairs!!! Whether you require HVAC (Heating, Ventilation and Air Conditioning) or Plumbing Mechanical work look no further than the Mechanical HVAC Contractors at JJ McLellan and Son to provide whole home comfort for all your Plumbing and Heating needs big or small, new or repairs!