Grogg's Home Services

It went well

Everything went very smoothly.

Very professional

It went well. They're great.

Everything was good.

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install was great intill i had problems a couple months later with my a/c sinking intot he ground,....they have horrible customer service from my expereience, everytime i called i ahd to reexplain my problem, they schedule and didnt show, finally came but told me i was going to have to pay disconnect and reconnect, intill i fixed my landscaping,.....which was not a problem before the install. Overall the intall of new heater and a/c was good, just had problems afterwards. they where on time durinng the install. the sales people are very friendly. I Had gotten a few different estimates and they where the most pricey, but in general the main reason i choose them was for the warranty on the euipment is was the best. They got a C for price cause what i said before. They got a B on Punctuality because of the no show appt., the ey got a B overall , cause of there lack of communication between office and serive techs., the responsive grade is also due to the fact there where informed about the problem and it took two weeks to get them out here. In repsonse though they where very helpful in sovling the problem at the end, SO it gets a B.

They have good service and everything was good.

The job went very well. They are punctual. They come when they say they are going to come. They will give you a quote, and they stick to that.

The service tech called ahead and arrived on time. He performed his work in about an hour, but he did not perform like he was in a hurry to go to another job. I felt like he covered everything he was supposed to do thoroughly.

They were here on time finish job ahead of time quoted time. They did good job clean-up when done.

It was a little hard to get hold of them. We called the office and they had to try to find a technician so that took a few days of playing phone tag. Other than that it was really good. They were professional and they cleaned up after themselves. He was early when he came. We would use them again if we needed to.

I have not had another experience with heating and cooling companies but if this is an example of how all companies do their work, then I would gladly give them an A+. We have been very satisfied with the workmanship and economy of our heating/ac. The whole house stays warm in winter and cool in summer.

Ozone Depletion Destruction of ozone by chlorinePresence of chlorine in CFC and HCFC refrigerantsIdentification of CFC, HCFC, and HFC refrigerants (not chemical formulas, but idea that R-12 is a CFC, R-22 is an HCFC, R-134 is an HFC, etc.)Idea that CFCs have higher ozone-depletion potential (ODP) than HCFCs, which in turn have higher ODP than HFCsHealth and environmental effects of ozone depletionEvidence of ozone depletion and role of CFCs and HCFCs Clean Air Act and Montreal Protocol CFC phaseout dateVenting prohibition at servicingVenting prohibition at disposalVenting prohibition on substitute refrigerants in November, 1995Maximum penalty under CAAMontreal Protocol (international agreement to phase out production of ozone-depleting substances) Section 608 Regulations Definition/identification of high and low-pressure refrigerantsDefinition of system-dependent vs. self-contained recovery/recycling equipmentIdentification of equipment covered by the rule (all air-conditioning and refrigeration equipment containing CFCs or HCFCs except motor vehicle air conditioners)Need for third-party certification of recycling and recovery equipment manufactured after November 15, 1993Standard for reclaimed refrigerant (ARI 700) Substitute Refrigerants and oils Absence of "drop-in" replacementsIncompatibility of substitute refrigerants with many lubricants used with CFC and HCFC refrigerants and incompatibility of CFC and HCFC refrigerants with many new lubricants (includes identification of lubricants for given refrigerants, such as esters with 134; alkylbenzenes for HCFCs)Fractionation problem--tendency of different components of blends to leak at different rates Refrigeration Refrigerant states (vapor vs. liquid) and pressures at different points of refrigeration cycle; how/when cooling occursRefrigeration gauges (color codes, ranges of different types, proper use) Three R's Definitions RecoverRecycleReclaim Recovery Techniques Need to avoid mixing refrigerantsFactors affecting speed of recovery (ambient temperature, size of recycling or recovery equipment, hose length and diameter, etc.) Dehydration Evacuation Need to evacuate system to eliminate air and moisture at the end of service Safety Risks of exposure to refrigerant (e.g., oxygen deprivation, cardiac effects, frost bite, long-term hazards)Personal protective equipment (gloves, goggles, self-contained breathing apparatus--SCBA--in extreme cases, etc)Reusable (or "recovery") cylinders vs. disposable cylinders (ensure former DOT approved, know former's yellow and gray color code, never refill latter)Risks of filling cylinders more than 80 percent fullUse of nitrogen rather than oxygen or compressed air for leak detectionUse of pressure regulator and relief valve with nitrogen Shipping Labels required for refrigerant cylinders (refrigerant identification, DOT classification tag) Top of page TYPE 1 (Small Appliances) Recovery Requirements Definition of "small appliance"Evacuation requirements for small appliances with and without working compressors using recovery equipment manufactured before November 15, 1993Evacuation requirements for small appliances with and without working compressors using recovery equipment manufactured after November 15, 1993 Recovery Techniques Use of pressure and temperature to identify refrigerants and detect noncondensablesMethods to recover refrigerant from small appliances with inoperative compressors using a system-dependent or "passive") recovery device (e.g., heat and sharply strike the compressor, use a vacuum pump with non-pressurized recovery container)Need to install both high and low side access valves when recovering refrigerant from small appliances with inoperative compressorsNeed to operate operative compressors when recovering refrigerant with a system-dependent ("passive") recovery deviceShould remove solderless access fittings at conclusion of service134a as likely substitute for 12 Safety Decomposition products of refrigerants at high temperatures (HCl, HFl etc) Top of page TYPE 2 (High-Pressure) Leak Detection Signs of leakage in high-pressure systems (excessive superheat, traces of oil for hermetics)Need to leak test before charging or recharging equipmentOrder of preference for leak test gases (nitrogen alone best, but nitrogen with trace quantity of 22 better than pure refrigerant) Leak repair requirements Allowable annual leak rate for commercial and industrial process refrigerationAllowable annual leak rate for other appliances containing more than 50 lbs of refrigerant Recovery Techniques Recovering liquid at beginning of recovery process speeds up processOther methods for speeding recovery (chilling recovery vessel, heating appliance or vessel from which refrigerant is being recovered)Methods for reducing cross-contamination and emissions when recovery or recycling machine is used with a new refrigerantNeed to wait a few minutes after reaching required recovery vacuum to see if system pressure rises (indicating that there is still liquid refrigerant in the system or in the oil) Recovery Requirements Evacuation requirements for high-pressure appliances in each of the following situations: DisposalMajor vs. non-major repairsLeaky vs. non-leaky appliancesAppliance (or component) containing less vs. more than 200 lbsRecovery/recycling equipment built before vs. after November 15, 1993 Definition of "major" repairsProhibition on using system-dependent recovery equipment on systems containing more than 15 pounds of refrigerant Refrigeration How to identify refrigerant in appliancesPressure-temperature relationships of common high-pressure refrigerants (may use standard temperature-pressure chart--be aware of need to add 14.7 to translate psig to psia)Components of high-pressure appliances (receiver, evaporator, accumulator, etc.) and state of refrigerant (vapor vs. liquid) in them Safety Shouldn't energize hermetic compressors under vacuum.Equipment room requirements under ASHRAE Standard 15 (oxygen deprivation sensor with all refrigerants) Top of page TYPE 3 (Low-pressure) Leak Detection Order of preference of leak test pressurization methods for low-pressure systems (first: hot water method or built-in system heating/pressurization device such Prevac; second: nitrogen)Signs of leakage into a low-pressure system (e.g., excessive purging)Maximum leak test pressure for low-pressure centrifugal chillers Leak repair requirements Allowable annual leak rate for commercial and industrial process refrigerationAllowable annual leak rate for other appliances containing more than 50 lbs of refrigerant Recovery Techniques Recovering liquid at beginning of recovery process speeds up processNeed to recover vapor in addition to liquidNeed to heat oil to 130F before removing it to minimize refrigerant releaseNeed to circulate or remove water from chiller during refrigerant evacuation to prevent freezingHigh-pressure cut-out level of recovery devices used with low-pressure appliances Recharging Techniques Need to introduce vapor before liquid to prevent freezing of water in the tubesNeed to charge centrifugals through evaporator charging valve Recovery Requirements Evacuation requirements for low-pressure appliances in each of the following situations: DisposalMajor vs. non-major repairsLeaky vs. non-leaky appliancesAppliance (or component) containing less vs. more than 200 lbsRecovery/recycling equipment built before vs. after November 15, 1993 Definitions of "major" and "non-major" repairsAllowable methods for pressurizing a low-pressure system for a non-major repair (controlled hot water and system heating/pressurization device such as Prevac)Need to wait a few minutes after reaching required recovery vacuum to see if system pressure rises (indicating that there is still liquid refrigerant in the system or in the oil) Refrigeration Purpose of purge unit in low-pressure systemsPressure-temperature relationships of low-pressure refrigerants Safety Equipment room requirements under ASHRAE Standard 15 (oxygen deprivation sensor with all refrigerants)Under ASHRAE Standard 15, need to have equipment room refrigerant sensor for 123 thats alll

I always get more than one quote these guys check everything. They take measurements, asked what my needs were, and made sure I was fully understanding in what I was recieving. The other guys just gave me a price or never returned my call. I would recommend and I only felt necessary to leave a rating score because I felt the person who left a score of an "F" was more likely a discrultled employee trying to give this company a bad name. I had many referals and now I am one of them. Grogg's will be the company I use and recommend in the future.

I would hire them again, they do great work.

From the start there were problems. I have never been so disappointed about a job being done.

Owner came to house and made measurements, gave written estimate, confirmed schedule. Workers were on time and professional.