| n | Duct-work of all sizes and gauges. |
| n | Furnaces: Mid or high efficient. |
| n | Air-conditiong, ductless air conditioing 13seer and up. |
| n | Humidification, electronic air cleaners, thermostats, sensors. |
| n | Make-Up-Air and Roof top units. |
| n | Hot water tanks, hot water systems. |
| n | Heat pumps/ split systems. |
| n | Stainless steel hoods/ welded 16 gauge and full kitchen systems. |
| n | Boilers with many types of systems including |
| n | In floor heating, rads and snow melt systems. |
| n | Gas-fitting, gas fireplaces, gas appliances |
| n | Exhaust and fresh-air type systems |
| n | Plumbing including under ground drains, venting, sinks, all types of bathroom and kitchen fixtures |
| n | Sprinkler fire suppresion sytems, including fire alarm systems/ restaurant systems |