Guillermo (Memo) and his team just completed our new heating and air unit. Our home is an older cottage built in the early 50s and was not the easiest, straight forward candidate for this upgrade. Memo was punctual, professional with explanations of the installation and a very good problem solver. Guillermo and Victor did a super job. The teams attention to detail is appreciated. We highly recommend Guillermo and all the Allstar Heating and Air Team. Mark and Sue Stagis