Austin & Rob arrived promptly at 8:00 am on the scheduled day to install a replacement for my second story (zone 2) AC unit. They started in the attic where it was cool but the temperature soon reached well into the 90s on one of the hottest days of the year so far. They worked diligently while sweating profusely without one single complaint. They then proceeded to replace the outside unit where it was equally as hot in the direct sun and then they endured a torrential down pour for about an hour. Again, no complaints, just kept working. When the unit was operational, my family and I went out to dinner. When we arrived back at home, the unit had shut down. I called the 24/7 contact number at Dwyer's and James returned my call within minutes. James diagnosed the issue as a faulty thermostat. I requested that he come to the house as an emergency service as my wife and daughter had slept on the sofas downstairs for the last two nights. James was at my house in about 30 minutes at 9:30 pm and replaced the thermostat at no charge. Fantastic! What more can you ask from your HVAC service contractor? Great job Dwyer's!!