SERVING THE DFW METROPLEX “Family owned and operated since 1972” package units St. Lic. # TACLA019484E 214-742-7252 Glossary Mechanically Ventilated Crawlspace System In HVAC a system designed to increase ventilation within a crawlspace, achieve higher air pressure in the crawlspace relative to air pressure in the soil beneath the crawlspace, or achieve lower air pressure in the crawlspace relative to air pressure in the living spaces, by use of a fan. Mitigation Measure taken to reduce adverse effects on the environment. Sala Air Conditioning has been serving the DFW area since 1972, providing commercial and residential heating and air conditioning. (Parts, Sales, Service, Installations, and Repairs) Home | Products | Services | Coupons | Contracting  | Contact  | Employment  | About Us   | Sitemap Air Conditioning and Heating Terms Facts to know about air conditioning and heating Contact Air Conditioning Repair Service faq about heating and a/c faq about heating and a/c A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z M Air Conditioning and Heating Terms A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z M